How do you solve $8 x = - 72$ $8x=-72$ ?

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Answer 1 · 2018-03-10T02:36:01

See a solution process below:

Divide each side of the equation by $8$ $color(red)(8)$ to solve for $x$ $x$ while keeping the equation balanced:

$\frac{8 x}{8} = - \frac{72}{8}$ $(8x)/color(red)(8) = -72/color(red)(8)$

$(color(red)(cancel(color(black)(8)))x)/cancel(color(red)(8)) = -(8 xx 9)/color(red)(8)$

$x = -(color(red)(cancel(color(black)(8))) xx 9)/cancel(color(red)(8))$

$x = -9$

Answer 2 · 2018-03-10T02:38:01

$x = -9$

All we have to do to solve this equation is isolate $x$ by itself on one side of the equals sign.

To do that, divide each side by $8$ , and then $x$ will be isolated, revealing the answer:
$8x=−72$

$(8x)/color(blue)8=(−72)/color(blue)8$

$(cancel(8)x)/cancel(color(blue)8)=(−72)/color(blue)8$

$x=(−72)/8$

$x=−9$

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