-2(x-5)+8=21

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Solution for -2(x-5)+8=21 equation: 


Simplifying
-2(x + -5) + 8 = 21

Reorder the terms:
-2(-5 + x) + 8 = 21
(-5 * -2 + x * -2) + 8 = 21
(10 + -2x) + 8 = 21

Reorder the terms:
10 + 8 + -2x = 21

Combine like terms: 10 + 8 = 18
18 + -2x = 21

Solving
18 + -2x = 21

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + -2x = 21 + -18

Combine like terms: 18 + -18 = 0
0 + -2x = 21 + -18
-2x = 21 + -18

Combine like terms: 21 + -18 = 3
-2x = 3

Divide each side by '-2'.
x = -1.5

Simplifying
x = -1.5

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