The problem requires solving a system of two linear equations with two variables, $x$ and $y$, using the elimination method. The given system is: $3x + 4y = 18$ $2x - 3y = 29$ The problem asks us to find the values of $x$ and $y$ that satisfy both equations.

AlgebraLinear EquationsSystems of EquationsElimination MethodSolving Equations
2025/3/19

1. Problem Description

The problem requires solving a system of two linear equations with two variables, xx and yy, using the elimination method. The given system is:
3x+4y=183x + 4y = 18
2x3y=292x - 3y = 29
The problem asks us to find the values of xx and yy that satisfy both equations.

2. Solution Steps

Step 1: Elimination Method
Multiply the first equation by 3:
3(3x+4y)=3(18)3(3x + 4y) = 3(18)
9x+12y=549x + 12y = 54
Multiply the second equation by 4:
4(2x3y)=4(29)4(2x - 3y) = 4(29)
8x12y=1168x - 12y = 116
Add the two resulting equations:
(9x+12y)+(8x12y)=54+116(9x + 12y) + (8x - 12y) = 54 + 116
17x=17017x = 170
Solve for x:
x=17017x = \frac{170}{17}
x=10x = 10
Step 2: Substitute to solve for y
Substitute the value of xx into the first original equation:
3(10)+4y=183(10) + 4y = 18
30+4y=1830 + 4y = 18
4y=18304y = 18 - 30
4y=124y = -12
y=124y = \frac{-12}{4}
y=3y = -3
Step 3: Write the solution as a coordinate pair
The solution is (x,y)=(10,3)(x, y) = (10, -3).

3. Final Answer

(x, y) = (10, -3)

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