Question

Please help I’m really bad at math.:(

A)x=10
B)x=6
C)x=8
D)x=7

Have a great day you beautiful person!!!!

Answer 1

The following solution is incorrect. The correct value of x is 7.

Explanation:

`3(4x - 15) = 39`

Distribute 3 to (4x-15). When distributing, the value outside parentheses is multiplied to all the numbers inside the parentheses. Since the 3 was only multiplied to 4x, the solution is wrong.

`12x - 45 = 39`

Add 45 to both sides.

`12x = 84`

Divide by 12 from both sides.

`x = 7`