-4(-5+n)=80

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Solution for -4(-5+n)=80 equation: 


Simplifying
-4(-5 + n) = 80
(-5 * -4 + n * -4) = 80
(20 + -4n) = 80

Solving
20 + -4n = 80

Solving for variable 'n'.

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

Add '-20' to each side of the equation.
20 + -20 + -4n = 80 + -20

Combine like terms: 20 + -20 = 0
0 + -4n = 80 + -20
-4n = 80 + -20

Combine like terms: 80 + -20 = 60
-4n = 60

Divide each side by '-4'.
n = -15

Simplifying
n = -15

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