We are given two conditions relating two numbers $x$ and $y$. First, their sum is 35, so $x + y = 35$. Second, when $x$ is divided by 4 and $y$ is divided by 3, the sum of the quotients is 8, so $\frac{x}{4} + \frac{y}{3} = 8$. We need to solve this system of two equations for $x$ and $y$.

AlgebraSystems of EquationsLinear EquationsSolving EquationsSubstitution
2025/5/17

1. Problem Description

We are given two conditions relating two numbers xx and yy.
First, their sum is 35, so x+y=35x + y = 35.
Second, when xx is divided by 4 and yy is divided by 3, the sum of the quotients is 8, so x4+y3=8\frac{x}{4} + \frac{y}{3} = 8.
We need to solve this system of two equations for xx and yy.

2. Solution Steps

We have the system of equations:
x+y=35x + y = 35
x4+y3=8\frac{x}{4} + \frac{y}{3} = 8
From the first equation, we can express yy in terms of xx:
y=35xy = 35 - x
Substitute this expression for yy into the second equation:
x4+35x3=8\frac{x}{4} + \frac{35 - x}{3} = 8
Multiply both sides of the equation by 12 (the least common multiple of 4 and 3) to eliminate the fractions:
12(x4+35x3)=12(8)12 (\frac{x}{4} + \frac{35 - x}{3}) = 12(8)
3x+4(35x)=963x + 4(35 - x) = 96
3x+1404x=963x + 140 - 4x = 96
x+140=96-x + 140 = 96
x=96140-x = 96 - 140
x=44-x = -44
x=44x = 44
Now, substitute the value of xx back into the equation y=35xy = 35 - x:
y=3544y = 35 - 44
y=9y = -9

3. Final Answer

x=44x = 44 and y=9y = -9

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