20-4n=-3(5-n)

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Solution for 20-4n=-3(5-n) equation: 


Simplifying
20 + -4n = -3(5 + -1n)
20 + -4n = (5 * -3 + -1n * -3)
20 + -4n = (-15 + 3n)

Solving
20 + -4n = -15 + 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
20 + -4n + -3n = -15 + 3n + -3n

Combine like terms: -4n + -3n = -7n
20 + -7n = -15 + 3n + -3n

Combine like terms: 3n + -3n = 0
20 + -7n = -15 + 0
20 + -7n = -15

Add '-20' to each side of the equation.
20 + -20 + -7n = -15 + -20

Combine like terms: 20 + -20 = 0
0 + -7n = -15 + -20
-7n = -15 + -20

Combine like terms: -15 + -20 = -35
-7n = -35

Divide each side by '-7'.
n = 5

Simplifying
n = 5

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