Question

How do I solve the equation 3 ( x - 4 ) = 12x

Answer 1

Explanation:

3(x-4) = 12x

(3(x-4))/3 = 12x/3

x - 4 = 4x

x - 4 = x + x + x + x

transpose all x values to the left side of the equation and the real numbers to the right

x - x - x - x - x = 4

-3x = 4

(-3x)/-3 = 4/3

x = - 1.3

to prove

3(-1.3 - 4) = 12(-1.3)

3(-5.3) = 12(-1.3)

-15.9 ≈ -15.6

x is approximately (-1.3)