42-m=143-378

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Solution for 42-m=143-378 equation:


Simplifying
42 + -1m = 143 + -378

Combine like terms: 143 + -378 = -235
42 + -1m = -235

Solving
42 + -1m = -235

Solving for variable 'm'.

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

Add '-42' to each side of the equation.
42 + -42 + -1m = -235 + -42

Combine like terms: 42 + -42 = 0
0 + -1m = -235 + -42
-1m = -235 + -42

Combine like terms: -235 + -42 = -277
-1m = -277

Divide each side by '-1'.
m = 277

Simplifying
m = 277

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