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How do you solve $- 9 x - 12 = 177$ $-9x-12=177$ ?

1 Answer

Jul 5, 2015

Add 12 to both sides
then divide by $(- 9)$ $(-9)$
to get $x = - 21$ $x=-21$

Explanation:

Given
$XXXX$ $color(white)("XXXX")$ $- 9 x - 12 = 177$ $-9x-12=177$
Add $12$ $12$ to both sides
$XXXX$ $color(white)("XXXX")$ $- 9 x = 189$ $-9x = 189$
Divide both sides by $(- 9)$ $(-9)$
$XXXX$ $color(white)("XXXX")$ $x = - 21$ $x = -21$

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