-2(x+21)=5(x-7)

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Solution for -2(x+21)=5(x-7) equation:


Simplifying
-2(x + 21) = 5(x + -7)

Reorder the terms:
-2(21 + x) = 5(x + -7)
(21 * -2 + x * -2) = 5(x + -7)
(-42 + -2x) = 5(x + -7)

Reorder the terms:
-42 + -2x = 5(-7 + x)
-42 + -2x = (-7 * 5 + x * 5)
-42 + -2x = (-35 + 5x)

Solving
-42 + -2x = -35 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-42 + -2x + -5x = -35 + 5x + -5x

Combine like terms: -2x + -5x = -7x
-42 + -7x = -35 + 5x + -5x

Combine like terms: 5x + -5x = 0
-42 + -7x = -35 + 0
-42 + -7x = -35

Add '42' to each side of the equation.
-42 + 42 + -7x = -35 + 42

Combine like terms: -42 + 42 = 0
0 + -7x = -35 + 42
-7x = -35 + 42

Combine like terms: -35 + 42 = 7
-7x = 7

Divide each side by '-7'.
x = -1

Simplifying
x = -1

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