20=7-5n-7

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Solution for 20=7-5n-7 equation:


Simplifying
20 = 7 + -5n + -7

Reorder the terms:
20 = 7 + -7 + -5n

Combine like terms: 7 + -7 = 0
20 = 0 + -5n
20 = -5n

Solving
20 = -5n

Solving for variable 'n'.

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

Add '5n' to each side of the equation.
20 + 5n = -5n + 5n

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

Add '-20' to each side of the equation.
20 + -20 + 5n = 0 + -20

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

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

Divide each side by '5'.
n = -4

Simplifying
n = -4

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