21-14=m

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Solution for 21-14=m equation:


Simplifying
21 + -14 = m

Combine like terms: 21 + -14 = 7
7 = m

Solving
7 = 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.
7 + -1m = m + -1m

Combine like terms: m + -1m = 0
7 + -1m = 0

Add '-7' to each side of the equation.
7 + -7 + -1m = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -1m = 0 + -7
-1m = 0 + -7

Combine like terms: 0 + -7 = -7
-1m = -7

Divide each side by '-1'.
m = 7

Simplifying
m = 7

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