Answer:
Step-by-step explanation:
6x + 3y = 30 -----------(I)
4x - 3y = 30 -----------(II)
Add equation (I) & (II). So, y will be eliminated and we can find the value of x
(I) 6x + 3y = 30
(II) 4x - 3y = 30 {Now add}
10x = 60
x = 60/10
x = 6
Plugin x = 6 in equation (I)
6*6 + 3y = 30
36 + 3y = 30
3y = 30- 36
3y = -6
y = -6/3
y = -2
