Question

3(x-4) = 21 quick!!!!!!!!!!!!!!!!!!!

Answer 1

Step-by-step explanation:

Simplifying

3(x + -4) = 21

Reorder the terms:

3(-4 + x) = 21

(-4 * 3 + x * 3) = 21

(-12 + 3x) = 21

Solving

-12 + 3x = 21

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '12' to each side of the equation.

-12 + 12 + 3x = 21 + 12

Combine like terms: -12 + 12 = 0

0 + 3x = 21 + 12

3x = 21 + 12

Combine like terms: 21 + 12 = 33

3x = 33

Divide each side by '3'.

x = 11

Simplifying

x = 11