7m-70-18m+57=42

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Solution for 7m-70-18m+57=42 equation:


Simplifying
7m + -70 + -18m + 57 = 42

Reorder the terms:
-70 + 57 + 7m + -18m = 42

Combine like terms: -70 + 57 = -13
-13 + 7m + -18m = 42

Combine like terms: 7m + -18m = -11m
-13 + -11m = 42

Solving
-13 + -11m = 42

Solving for variable 'm'.

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

Add '13' to each side of the equation.
-13 + 13 + -11m = 42 + 13

Combine like terms: -13 + 13 = 0
0 + -11m = 42 + 13
-11m = 42 + 13

Combine like terms: 42 + 13 = 55
-11m = 55

Divide each side by '-11'.
m = -5

Simplifying
m = -5

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