7-4n+2n=42-75

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Solution for 7-4n+2n=42-75 equation:


Simplifying
7 + -4n + 2n = 42 + -75

Combine like terms: -4n + 2n = -2n
7 + -2n = 42 + -75

Combine like terms: 42 + -75 = -33
7 + -2n = -33

Solving
7 + -2n = -33

Solving for variable 'n'.

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

Add '-7' to each side of the equation.
7 + -7 + -2n = -33 + -7

Combine like terms: 7 + -7 = 0
0 + -2n = -33 + -7
-2n = -33 + -7

Combine like terms: -33 + -7 = -40
-2n = -40

Divide each side by '-2'.
n = 20

Simplifying
n = 20

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