138=-n-7(-4-8n)

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Solution for 138=-n-7(-4-8n) equation:


Simplifying
138 = -1n + -7(-4 + -8n)
138 = -1n + (-4 * -7 + -8n * -7)
138 = -1n + (28 + 56n)

Reorder the terms:
138 = 28 + -1n + 56n

Combine like terms: -1n + 56n = 55n
138 = 28 + 55n

Solving
138 = 28 + 55n

Solving for variable 'n'.

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

Add '-55n' to each side of the equation.
138 + -55n = 28 + 55n + -55n

Combine like terms: 55n + -55n = 0
138 + -55n = 28 + 0
138 + -55n = 28

Add '-138' to each side of the equation.
138 + -138 + -55n = 28 + -138

Combine like terms: 138 + -138 = 0
0 + -55n = 28 + -138
-55n = 28 + -138

Combine like terms: 28 + -138 = -110
-55n = -110

Divide each side by '-55'.
n = 2

Simplifying
n = 2

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