15-2(x+2)=21

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Solution for 15-2(x+2)=21 equation: 


Simplifying
15 + -2(x + 2) = 21

Reorder the terms:
15 + -2(2 + x) = 21
15 + (2 * -2 + x * -2) = 21
15 + (-4 + -2x) = 21

Combine like terms: 15 + -4 = 11
11 + -2x = 21

Solving
11 + -2x = 21

Solving for variable 'x'.

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

Add '-11' to each side of the equation.
11 + -11 + -2x = 21 + -11

Combine like terms: 11 + -11 = 0
0 + -2x = 21 + -11
-2x = 21 + -11

Combine like terms: 21 + -11 = 10
-2x = 10

Divide each side by '-2'.
x = -5

Simplifying
x = -5

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