(2-x)+21=15

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


Simplifying
(2 + -1x) + 21 = 15

Remove parenthesis around (2 + -1x)
2 + -1x + 21 = 15

Reorder the terms:
2 + 21 + -1x = 15

Combine like terms: 2 + 21 = 23
23 + -1x = 15

Solving
23 + -1x = 15

Solving for variable 'x'.

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

Add '-23' to each side of the equation.
23 + -23 + -1x = 15 + -23

Combine like terms: 23 + -23 = 0
0 + -1x = 15 + -23
-1x = 15 + -23

Combine like terms: 15 + -23 = -8
-1x = -8

Divide each side by '-1'.
x = 8

Simplifying
x = 8

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