-5x-21=-7(x+5)

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Solution for -5x-21=-7(x+5) equation:


Simplifying
-5x + -21 = -7(x + 5)

Reorder the terms:
-21 + -5x = -7(x + 5)

Reorder the terms:
-21 + -5x = -7(5 + x)
-21 + -5x = (5 * -7 + x * -7)
-21 + -5x = (-35 + -7x)

Solving
-21 + -5x = -35 + -7x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '7x' to each side of the equation.
-21 + -5x + 7x = -35 + -7x + 7x

Combine like terms: -5x + 7x = 2x
-21 + 2x = -35 + -7x + 7x

Combine like terms: -7x + 7x = 0
-21 + 2x = -35 + 0
-21 + 2x = -35

Add '21' to each side of the equation.
-21 + 21 + 2x = -35 + 21

Combine like terms: -21 + 21 = 0
0 + 2x = -35 + 21
2x = -35 + 21

Combine like terms: -35 + 21 = -14
2x = -14

Divide each side by '2'.
x = -7

Simplifying
x = -7

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