Systems of linear equations

Question

5x + y = 4

2x - 3y =5

Answer 1

5x + y = 4

y = 4 - 5x This is the substitution equation

2x - 3y = 5

Plug in the substitution equation for y:

2x - 3(4 - 5x) = 5

2x - 12 + 15x = 5

Solve for x. Once you have x, use the substitution equation to get y.