Question

I was told that 3x- was -12 but I can’t understand how they got -12:/

Answer 1

x=8

Explanation:

`(3(x - 4))/(2) = 6`

Multiply 3 by what's in the bracket

`(3x - 12)/(2) = 6`

Multiply through by the LCM of all the denominators

`(2(3x - 12))/(2) = 2 * 6`

=The numerator 2 will cancel the denominator 2

`3x - 12 = 12`

Grouping like terms

`3x = 12 + 12`

Dividing both sides by 3

`(3x)/(3 ) = (24)/(3)`

`x = 8`

Answer 2

6

Explanation:

They got 3x-12 because they took

3(x - 4)

and they distrubuted the 3 to the numbers in parenthesis,

how they did this was they multiplied 3 by x and got 3x then they kept the subtraction sign that is in the parenthesis. Then they multiplied 3 by the 4 and got 12.

then the equation was 3x - 12/2 = 6