How do you solve $\frac{x}{12} - 4 = 20$ $x/12-4=20$ ?

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Answer 1 · 2018-03-05T07:56:16

See a solution process below:

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

$\frac{x}{12} - 4 + 4 = 20 + 4$ $x/12 - 4 + color(red)(4) = 20 + color(red)(4)$

$\frac{x}{12} - 0 = 24$ $x/12 - 0 = 24$

$\frac{x}{12} = 24$ $x/12 = 24$

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

$12 \times \frac{x}{12} = 12 \times 24$ $color(red)(12) xx x/12 = color(red)(12) xx 24$

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

$x = 288$

How do you solve x/12-4=20x12−4=20x/12-4=20?