Question

Solve the simultaneous equations for x and y: 4 x + 3 y = − 12 2 x − 3 y = 30

Answer 1

Explanation:

4x + 3y = -12 -----------------(I)

2x - 3y = 30 ----------------(II)

Add the equations. So, y will be eliminated and we can find the value of x

4x + 3y = -12

2x - 3y = 30

6x = 18

x = 18/6

x = 3

Plug in the value of x in equation (I)

4*3 + 3y = -12

12 + 3y = -12

3y = -12 - 12

3y = -24

y = -24/3

y = -8