-7n-7(-2n-5)=31+8n

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Solution for -7n-7(-2n-5)=31+8n equation:


Simplifying
-7n + -7(-2n + -5) = 31 + 8n

Reorder the terms:
-7n + -7(-5 + -2n) = 31 + 8n
-7n + (-5 * -7 + -2n * -7) = 31 + 8n
-7n + (35 + 14n) = 31 + 8n

Reorder the terms:
35 + -7n + 14n = 31 + 8n

Combine like terms: -7n + 14n = 7n
35 + 7n = 31 + 8n

Solving
35 + 7n = 31 + 8n

Solving for variable 'n'.

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

Add '-8n' to each side of the equation.
35 + 7n + -8n = 31 + 8n + -8n

Combine like terms: 7n + -8n = -1n
35 + -1n = 31 + 8n + -8n

Combine like terms: 8n + -8n = 0
35 + -1n = 31 + 0
35 + -1n = 31

Add '-35' to each side of the equation.
35 + -35 + -1n = 31 + -35

Combine like terms: 35 + -35 = 0
0 + -1n = 31 + -35
-1n = 31 + -35

Combine like terms: 31 + -35 = -4
-1n = -4

Divide each side by '-1'.
n = 4

Simplifying
n = 4

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