Hello, mathnoobie25!

Here's the first one . . .

1. Solve the system of equation using the addition method

. . 2x - 3y = 11

. . -3x = -5y - 17

We have: .

Multiply (1) by 5: .

Multiply (2) by 3: .

Add and we get: .

Substitute into (2): .

Answer: .