How do you solve $-3( - 5x - 5) = 120$ ?

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Answer 1 · 2017-02-22T04:01:29

See the entire solution process below:

First, expand the terms within parenthesis on the left side of the equation:

$color(red)(-3)(-5x - 5) = 120$

$(color(red)(-3) xx -5x) + (color(red)(-3) xx -5) = 120$

$15x + 15 = 120$

Next, subtract $color(red)(15)$ from each side of the equation to isolate the $x$ term while keeping the equation balanced:

$15x + 15 - color(red)(15) = 120 - color(red)(15)$

$15x + 0 = 105$

$15x = 105$

Now, divide each side of the equation by $color(red)(15)$ to solve for $x$ while keeping the equation balanced:

$(15x)/color(red)(15) = 105/color(red)(15)$

$(color(red)(cancel(color(black)(15)))x)/cancel(color(red)(15)) = 7$

$x = 7$

How do you solve -3( - 5x - 5) = 120-3( - 5x - 5) = 120?