2+21=x+7

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Solution for 2+21=x+7 equation: 


Simplifying
2 + 21 = x + 7

Combine like terms: 2 + 21 = 23
23 = x + 7

Reorder the terms:
23 = 7 + x

Solving
23 = 7 + 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.
23 + -1x = 7 + x + -1x

Combine like terms: x + -1x = 0
23 + -1x = 7 + 0
23 + -1x = 7

Add '-23' to each side of the equation.
23 + -23 + -1x = 7 + -23

Combine like terms: 23 + -23 = 0
0 + -1x = 7 + -23
-1x = 7 + -23

Combine like terms: 7 + -23 = -16
-1x = -16

Divide each side by '-1'.
x = 16

Simplifying
x = 16

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