86=-8+2(7+8)n

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Solution for 86=-8+2(7+8)n equation:


Simplifying
86 = -8 + 2(7 + 8) * n

Combine like terms: 7 + 8 = 15
86 = -8 + 2(15) * n

Multiply 2 * 15
86 = -8 + 30n

Solving
86 = -8 + 30n

Solving for variable 'n'.

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

Add '-30n' to each side of the equation.
86 + -30n = -8 + 30n + -30n

Combine like terms: 30n + -30n = 0
86 + -30n = -8 + 0
86 + -30n = -8

Add '-86' to each side of the equation.
86 + -86 + -30n = -8 + -86

Combine like terms: 86 + -86 = 0
0 + -30n = -8 + -86
-30n = -8 + -86

Combine like terms: -8 + -86 = -94
-30n = -94

Divide each side by '-30'.
n = 3.133333333

Simplifying
n = 3.133333333

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