-18=-(n-7)-8(2n+1)

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Solution for -18=-(n-7)-8(2n+1) equation:


Simplifying
-18 = -1(n + -7) + -8(2n + 1)

Reorder the terms:
-18 = -1(-7 + n) + -8(2n + 1)
-18 = (-7 * -1 + n * -1) + -8(2n + 1)
-18 = (7 + -1n) + -8(2n + 1)

Reorder the terms:
-18 = 7 + -1n + -8(1 + 2n)
-18 = 7 + -1n + (1 * -8 + 2n * -8)
-18 = 7 + -1n + (-8 + -16n)

Reorder the terms:
-18 = 7 + -8 + -1n + -16n

Combine like terms: 7 + -8 = -1
-18 = -1 + -1n + -16n

Combine like terms: -1n + -16n = -17n
-18 = -1 + -17n

Solving
-18 = -1 + -17n

Solving for variable 'n'.

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

Add '17n' to each side of the equation.
-18 + 17n = -1 + -17n + 17n

Combine like terms: -17n + 17n = 0
-18 + 17n = -1 + 0
-18 + 17n = -1

Add '18' to each side of the equation.
-18 + 18 + 17n = -1 + 18

Combine like terms: -18 + 18 = 0
0 + 17n = -1 + 18
17n = -1 + 18

Combine like terms: -1 + 18 = 17
17n = 17

Divide each side by '17'.
n = 1

Simplifying
n = 1

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