30-4-7=m

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Solution for 30-4-7=m equation:


Simplifying
30 + -4 + -7 = m

Combine like terms: 30 + -4 = 26
26 + -7 = m

Combine like terms: 26 + -7 = 19
19 = m

Solving
19 = 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.
19 + -1m = m + -1m

Combine like terms: m + -1m = 0
19 + -1m = 0

Add '-19' to each side of the equation.
19 + -19 + -1m = 0 + -19

Combine like terms: 19 + -19 = 0
0 + -1m = 0 + -19
-1m = 0 + -19

Combine like terms: 0 + -19 = -19
-1m = -19

Divide each side by '-1'.
m = 19

Simplifying
m = 19

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