2m-21+17=9-7

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Solution for 2m-21+17=9-7 equation:


Simplifying
2m + -21 + 17 = 9 + -7

Reorder the terms:
-21 + 17 + 2m = 9 + -7

Combine like terms: -21 + 17 = -4
-4 + 2m = 9 + -7

Combine like terms: 9 + -7 = 2
-4 + 2m = 2

Solving
-4 + 2m = 2

Solving for variable 'm'.

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

Add '4' to each side of the equation.
-4 + 4 + 2m = 2 + 4

Combine like terms: -4 + 4 = 0
0 + 2m = 2 + 4
2m = 2 + 4

Combine like terms: 2 + 4 = 6
2m = 6

Divide each side by '2'.
m = 3

Simplifying
m = 3

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