-21+8=m-1

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Solution for -21+8=m-1 equation:


Simplifying
-21 + 8 = m + -1

Combine like terms: -21 + 8 = -13
-13 = m + -1

Reorder the terms:
-13 = -1 + m

Solving
-13 = -1 + m

Solving for variable 'm'.

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

Add '-1m' to each side of the equation.
-13 + -1m = -1 + m + -1m

Combine like terms: m + -1m = 0
-13 + -1m = -1 + 0
-13 + -1m = -1

Add '13' to each side of the equation.
-13 + 13 + -1m = -1 + 13

Combine like terms: -13 + 13 = 0
0 + -1m = -1 + 13
-1m = -1 + 13

Combine like terms: -1 + 13 = 12
-1m = 12

Divide each side by '-1'.
m = -12

Simplifying
m = -12

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