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

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


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

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

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

Reorder the terms:
18 + -2x = 21 + x

Solving
18 + -2x = 21 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
18 + -2x + -1x = 21 + x + -1x

Combine like terms: -2x + -1x = -3x
18 + -3x = 21 + x + -1x

Combine like terms: x + -1x = 0
18 + -3x = 21 + 0
18 + -3x = 21

Add '-18' to each side of the equation.
18 + -18 + -3x = 21 + -18

Combine like terms: 18 + -18 = 0
0 + -3x = 21 + -18
-3x = 21 + -18

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

Divide each side by '-3'.
x = -1

Simplifying
x = -1

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