40=72+2n-n

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Solution for 40=72+2n-n equation:


Simplifying
40 = 72 + 2n + -1n

Combine like terms: 2n + -1n = 1n
40 = 72 + 1n

Solving
40 = 72 + 1n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
40 + -1n = 72 + 1n + -1n

Combine like terms: 1n + -1n = 0
40 + -1n = 72 + 0
40 + -1n = 72

Add '-40' to each side of the equation.
40 + -40 + -1n = 72 + -40

Combine like terms: 40 + -40 = 0
0 + -1n = 72 + -40
-1n = 72 + -40

Combine like terms: 72 + -40 = 32
-1n = 32

Divide each side by '-1'.
n = -32

Simplifying
n = -32

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