-10=z-21

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Solution for -10=z-21 equation:


Simplifying
-10 = z + -21

Reorder the terms:
-10 = -21 + z

Solving
-10 = -21 + z

Solving for variable 'z'.

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

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

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

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

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

Combine like terms: -21 + 10 = -11
-1z = -11

Divide each side by '-1'.
z = 11

Simplifying
z = 11

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