The problem is to solve the system of linear equations: $4x + 3y = -4$ $-5x + y = 5$

AlgebraLinear EquationsSystem of EquationsSubstitution MethodSolving Equations
2025/4/2

1. Problem Description

The problem is to solve the system of linear equations:
4x+3y=44x + 3y = -4
5x+y=5-5x + y = 5

2. Solution Steps

We can solve this system of equations using either substitution or elimination. I will use the substitution method.
First, solve the second equation for yy:
y=5x+5y = 5x + 5
Now, substitute this expression for yy into the first equation:
4x+3(5x+5)=44x + 3(5x + 5) = -4
Distribute the 3:
4x+15x+15=44x + 15x + 15 = -4
Combine like terms:
19x+15=419x + 15 = -4
Subtract 15 from both sides:
19x=1919x = -19
Divide by 19:
x=1x = -1
Now, substitute x=1x = -1 back into the equation y=5x+5y = 5x + 5:
y=5(1)+5y = 5(-1) + 5
y=5+5y = -5 + 5
y=0y = 0
Therefore, the solution to the system of equations is x=1x = -1 and y=0y = 0.

3. Final Answer

x=1x = -1 and y=0y = 0

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