40=-20n

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Solution for 40=-20n equation:


Simplifying
40 = -20n

Solving
40 = -20n

Solving for variable 'n'.

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

Add '20n' to each side of the equation.
40 + 20n = -20n + 20n

Combine like terms: -20n + 20n = 0
40 + 20n = 0

Add '-40' to each side of the equation.
40 + -40 + 20n = 0 + -40

Combine like terms: 40 + -40 = 0
0 + 20n = 0 + -40
20n = 0 + -40

Combine like terms: 0 + -40 = -40
20n = -40

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

Simplifying
n = -2

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