How do you solve $-9( x + 5) = 81$ ?

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Answer 1 · 2016-11-27T18:47:37

x= -14

Distribute:
-9x - 45 = 81
Common factors:
-9x = 81 + 45
Solve for X
-9x = 126
x = 126/-9
x= -14

Answer 2 · 2016-11-27T18:49:11

$x = -14$

First, divide each side of the equation by $-9$ :

$(-9(x + 5))/-9 = 81/(-9)$

$(cancel(-9)(x + 5))/cancel(-9) = -9$

$x + 5 = -9$

Now subtract $5$ from each side of the equation to solve for $x$ while keeping the equation balanced:

$x + 5 - 5 = -9 - 5$

$x + 0 = -14$

$x = -14$

How do you solve -9( x + 5) = 81-9( x + 5) = 81?