Question

Please help I’m really bad at math.:(

Answer 1

Answer:

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

Step-by-step 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.

$x = 7$