We are asked to solve several systems of linear equations. We'll solve system number 6. The system is: $x + 2y = 11$ $2x + 3y = 5$

AlgebraLinear EquationsSystems of EquationsElimination MethodSolution Verification
2025/4/30

1. Problem Description

We are asked to solve several systems of linear equations. We'll solve system number

6. The system is:

x+2y=11x + 2y = 11
2x+3y=52x + 3y = 5

2. Solution Steps

We can use the method of substitution or elimination. Let's use elimination. Multiply the first equation by -2:
2(x+2y)=2(11)-2(x + 2y) = -2(11)
2x4y=22-2x - 4y = -22
Now we have the following system:
2x4y=22-2x - 4y = -22
2x+3y=52x + 3y = 5
Add the two equations together:
(2x4y)+(2x+3y)=22+5(-2x - 4y) + (2x + 3y) = -22 + 5
y=17-y = -17
y=17y = 17
Now substitute y=17y = 17 into the first original equation:
x+2(17)=11x + 2(17) = 11
x+34=11x + 34 = 11
x=1134x = 11 - 34
x=23x = -23
Therefore, the solution is x=23x = -23 and y=17y = 17.
We can verify the answer by substituting into the second equation:
2x+3y=52x + 3y = 5
2(23)+3(17)=46+51=52(-23) + 3(17) = -46 + 51 = 5

3. Final Answer

x=23x = -23, y=17y = 17

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