10=x-21

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Solution for 10=x-21 equation:


Simplifying
10 = x + -21

Reorder the terms:
10 = -21 + x

Solving
10 = -21 + 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.
10 + -1x = -21 + x + -1x

Combine like terms: x + -1x = 0
10 + -1x = -21 + 0
10 + -1x = -21

Add '-10' to each side of the equation.
10 + -10 + -1x = -21 + -10

Combine like terms: 10 + -10 = 0
0 + -1x = -21 + -10
-1x = -21 + -10

Combine like terms: -21 + -10 = -31
-1x = -31

Divide each side by '-1'.
x = 31

Simplifying
x = 31

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