42-2(5+7)=m

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Solution for 42-2(5+7)=m equation:


Simplifying
42 + -2(5 + 7) = m

Combine like terms: 5 + 7 = 12
42 + -2(12) = m

Multiply -2 * 12
42 + -24 = m

Combine like terms: 42 + -24 = 18
18 = m

Solving
18 = 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.
18 + -1m = m + -1m

Combine like terms: m + -1m = 0
18 + -1m = 0

Add '-18' to each side of the equation.
18 + -18 + -1m = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -1m = 0 + -18
-1m = 0 + -18

Combine like terms: 0 + -18 = -18
-1m = -18

Divide each side by '-1'.
m = 18

Simplifying
m = 18

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