We are given three problems to solve. Problem 5: Find four consecutive numbers that sum to 22. Problem 6: Find three consecutive numbers such that three times the first, four times the second, and five times the third sums to 74. Problem 7: Find two consecutive even numbers such that five times the smaller exceeds three times the greater by 16.

AlgebraLinear EquationsConsecutive NumbersWord Problems
2025/7/16

1. Problem Description

We are given three problems to solve.
Problem 5: Find four consecutive numbers that sum to
2

2. Problem 6: Find three consecutive numbers such that three times the first, four times the second, and five times the third sums to

7

4. Problem 7: Find two consecutive even numbers such that five times the smaller exceeds three times the greater by

1
6.

2. Solution Steps

Problem 5:
Let the four consecutive numbers be x,x+1,x+2,x+3x, x+1, x+2, x+3. Then their sum is x+(x+1)+(x+2)+(x+3)=22x + (x+1) + (x+2) + (x+3) = 22.
Simplifying the equation, we get 4x+6=224x + 6 = 22.
Subtracting 6 from both sides, we have 4x=164x = 16.
Dividing both sides by 4, we get x=4x = 4.
Therefore, the numbers are 4, 5, 6, and
7.
Problem 6:
Let the three consecutive numbers be x,x+1,x+2x, x+1, x+2. Then, 3x+4(x+1)+5(x+2)=743x + 4(x+1) + 5(x+2) = 74.
Expanding the equation, we get 3x+4x+4+5x+10=743x + 4x + 4 + 5x + 10 = 74.
Combining like terms, we have 12x+14=7412x + 14 = 74.
Subtracting 14 from both sides, we have 12x=6012x = 60.
Dividing both sides by 12, we get x=5x = 5.
Therefore, the numbers are 5, 6, and
7.
Problem 7:
Let the two consecutive even numbers be 2x2x and 2x+22x+2.
Then, 5(2x)=3(2x+2)+165(2x) = 3(2x+2) + 16.
Simplifying the equation, we get 10x=6x+6+1610x = 6x + 6 + 16.
Combining like terms, we have 10x=6x+2210x = 6x + 22.
Subtracting 6x6x from both sides, we get 4x=224x = 22.
Dividing both sides by 4, we get x=224=112=5.5x = \frac{22}{4} = \frac{11}{2} = 5.5.
Since xx must be an integer for 2x2x to be an even number, there is likely an error in the statement. Let the consecutive even integers be xx and x+2x+2.
Then 5x=3(x+2)+165x = 3(x+2) + 16
5x=3x+6+165x = 3x + 6 + 16
5x=3x+225x = 3x + 22
2x=222x = 22
x=11x = 11
x+2=13x+2 = 13
However, these are not even numbers. Let us check our initial equations. Let us re-interpret the question: Find two consecutive even numbers such that five times the smaller number is 16 more than three times the greater number. Then, the equation is
5x=3(x+2)+165x = 3(x+2) + 16 as solved above, but x is meant to be even. So there are no even solutions. Let us try to interpret it as the other way. Find two consecutive even numbers such that five times the smaller exceeds three times the greater by
1

6. Thus $x, x+2$ are two consecutive even numbers.

5x3(x+2)=165x - 3(x+2) = 16
5x3x6=165x - 3x - 6 = 16
2x=222x = 22
x=11x = 11
Again, this does not work. Let's assume there are integers such that 5x3(x+1)=165x - 3(x+1) = 16 which would mean consecutive integers (not even).
5x3x3=165x - 3x - 3 = 16
2x=192x = 19 which means not integers exist.
Let's assume that the problem says 5 times the GREATER is 16 more than 3 times the smaller.
5(2x+2)=3(2x)+165(2x+2) = 3(2x) + 16
10x+10=6x+1610x + 10 = 6x + 16
4x=64x = 6
x=32x = \frac{3}{2}
Which again means no integers can work.
The equation should be 5x=3(x+2)+165x = 3(x+2)+16 where xx is even, but our calculations show no integers satisfy the equation, therefore there is likely a transcription error. Let's assume the problem intended consecutive integers xx and x+1x+1 instead of consecutive even numbers. Then 5x=3(x+1)+165x=3(x+1)+16 implies 5x=3x+3+165x=3x+3+16 or 2x=192x=19, which does not lead to integers. Let us check if the problem was intending to read "...by 10." rather than "...by 16."
If this were true, we would have 5x=3(x+2)+105x = 3(x+2)+10
5x=3x+6+105x = 3x+6+10
2x=162x = 16
x=8x = 8
Therefore x+2=10x+2=10
Then if x=8 and x+2=10 are two consecutive even integers, 58=405*8=40 and 310=303*10=30 so 5x=3x+105x=3x+10 is true. The consecutive even integers would be 8 and
1
0.

3. Final Answer

Problem 5: The numbers are 4, 5, 6, and

7. Problem 6: The numbers are 5, 6, and

7. Problem 7: Assuming the "...by 16" statement was in error and should be "...by 10", The numbers are 8 and

1

0. Otherwise, there are no such even numbers.