2(x-21)=15

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


Simplifying
2(x + -21) = 15

Reorder the terms:
2(-21 + x) = 15
(-21 * 2 + x * 2) = 15
(-42 + 2x) = 15

Solving
-42 + 2x = 15

Solving for variable 'x'.

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

Add '42' to each side of the equation.
-42 + 42 + 2x = 15 + 42

Combine like terms: -42 + 42 = 0
0 + 2x = 15 + 42
2x = 15 + 42

Combine like terms: 15 + 42 = 57
2x = 57

Divide each side by '2'.
x = 28.5

Simplifying
x = 28.5

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