Question

1) 8 -(6 - 12x) = -10. 2) 30 = -(7 - x)

Answer 1

1) x = -1

2) x = 37

Explanation:

1)
`8 - ( - 6 - 12x) = - 10`

After opening the brackets , the sign of the numbers in the brackets would change.

`= > 8 - 6 + 12x = - 10`

`= > 12x + 2= - 10`

Substracting both the sides by 2 ,

`= > 12x + 2 - 2 = - 10 - 2`

`= > 12x = - 12`

Divding both the sides by 12 ,

`= > (12x)/(12) = ( - 12)/(12)`

`= > x = - 1`

2)
`- (7 - x) = 30`

After opening the brackets , the sign of the numbers inside the brackets would change.

`= > x - 7 = 30`

Adding both the sides by 7 ,

`= > x - 7 + 7 = 30 + 7`

`= > x = 37`