-5(4-n)=-45

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Solution for -5(4-n)=-45 equation: 


Simplifying
-5(4 + -1n) = -45
(4 * -5 + -1n * -5) = -45
(-20 + 5n) = -45

Solving
-20 + 5n = -45

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 + 5n = -45 + 20

Combine like terms: -20 + 20 = 0
0 + 5n = -45 + 20
5n = -45 + 20

Combine like terms: -45 + 20 = -25
5n = -25

Divide each side by '5'.
n = -5

Simplifying
n = -5

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