How do you solve x/12-4=20?

1 Answer
Mar 5, 2018

See a solution process below:

Explanation:

First, add color(red)(4) to each side of the equation to isolate the x term while keeping the equation balanced:

x/12 - 4 + color(red)(4) = 20 + color(red)(4)

x/12 - 0 = 24

x/12 = 24

Now, multiply each side of the equation by color(red)(12) to solve for x while keeping the equation balanced:

color(red)(12) xx x/12 = color(red)(12) xx 24

cancel(color(red)(12)) xx x/color(red)(cancel(color(black)(12))) = 288

x = 288