Question

Solve the simultaneous equation
4x-y=9
2x-3y= -23

Answer 1

x = 5

y = 11

Explanation:

y = 4x - 9

2x -3(4x - 9) = -23

2x - 12x + 27 = -23

-10x = -23 -27

-10x = -50

minus cancels out

x = 5

y = 4(5) -9

y = 20 - 9

y = 11