21-x=-10

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Solution for 21-x=-10 equation:


Simplifying
21 + -1x = -10

Solving
21 + -1x = -10

Solving for variable 'x'.

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

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

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

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

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

Simplifying
x = 31

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