-21+4+m=-8+12

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Solution for -21+4+m=-8+12 equation: 


Simplifying
-21 + 4 + m = -8 + 12

Combine like terms: -21 + 4 = -17
-17 + m = -8 + 12

Combine like terms: -8 + 12 = 4
-17 + m = 4

Solving
-17 + m = 4

Solving for variable 'm'.

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

Add '17' to each side of the equation.
-17 + 17 + m = 4 + 17

Combine like terms: -17 + 17 = 0
0 + m = 4 + 17
m = 4 + 17

Combine like terms: 4 + 17 = 21
m = 21

Simplifying
m = 21

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