-2(x+7)=21

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


Simplifying
-2(x + 7) = 21

Reorder the terms:
-2(7 + x) = 21
(7 * -2 + x * -2) = 21
(-14 + -2x) = 21

Solving
-14 + -2x = 21

Solving for variable 'x'.

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

Add '14' to each side of the equation.
-14 + 14 + -2x = 21 + 14

Combine like terms: -14 + 14 = 0
0 + -2x = 21 + 14
-2x = 21 + 14

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

Divide each side by '-2'.
x = -17.5

Simplifying
x = -17.5

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