2(x-2)=21

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


Simplifying
2(x + -2) = 21

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

Solving
-4 + 2x = 21

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + 2x = 21 + 4

Combine like terms: -4 + 4 = 0
0 + 2x = 21 + 4
2x = 21 + 4

Combine like terms: 21 + 4 = 25
2x = 25

Divide each side by '2'.
x = 12.5

Simplifying
x = 12.5

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