Question

6(2x – 1) – 12 = 3(7x + 4)
a.-18
b.9
c.18

Answer 1

Explanation:

`6(2x -1) - 12 = 3(7x + 4)`

`12x-6-12=21x+12` (multiplied to remove brackets)

`12x-18=21x+12`

`12x=21x+30` (+18 to both sides of the equation)

`-9x=30` (-21x both sides)

`x=-(30)/(9)=-(10)/(3)` (÷-9 both sides and then simplified the

fraction)

None of the answers are correct

Answer 2

x = -10/3

Explanation:

6(2x – 1) – 12 = 3(7x + 4)

12x - 6 - 12 = 21x + 12

12x - 18 = 21x + 12

-9x - 18 = 12

-9x = 30

x = -30/9

x = -10/3