40=40-n

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Solution for 40=40-n equation:


Simplifying
40 = 40 + -1n

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

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

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

Solving
0 = -1n

Solving for variable 'n'.

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

Add 'n' to each side of the equation.
0 + n = -1n + n
Remove the zero:
n = -1n + n

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

Simplifying
n = 0

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