-21m-13=89

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Solution for -21m-13=89 equation: 


Simplifying
-21m + -13 = 89

Reorder the terms:
-13 + -21m = 89

Solving
-13 + -21m = 89

Solving for variable 'm'.

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

Add '13' to each side of the equation.
-13 + 13 + -21m = 89 + 13

Combine like terms: -13 + 13 = 0
0 + -21m = 89 + 13
-21m = 89 + 13

Combine like terms: 89 + 13 = 102
-21m = 102

Divide each side by '-21'.
m = -4.857142857

Simplifying
m = -4.857142857

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