Question

Solve the following system of equations
5x+2y=-6
3x-2y=22

Answer 1

y = 8

Explanation:

5x + 2y = -6 .... 5x = -6 - 2y ...... x = -6/5 -2y/5

3 × ( -6/5 -2y/5 ) - 2y = 22

-18/5 - 6y/5 - 2y = 22 ... (×5)

-18 - 6y - 10y = 110

-16y = 128 .... (× -1)

16y = -128 .... (÷16)

y = 8