87=-3(-8-3n)

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Solution for 87=-3(-8-3n) equation: 


Simplifying
87 = -3(-8 + -3n)
87 = (-8 * -3 + -3n * -3)
87 = (24 + 9n)

Solving
87 = 24 + 9n

Solving for variable 'n'.

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

Add '-9n' to each side of the equation.
87 + -9n = 24 + 9n + -9n

Combine like terms: 9n + -9n = 0
87 + -9n = 24 + 0
87 + -9n = 24

Add '-87' to each side of the equation.
87 + -87 + -9n = 24 + -87

Combine like terms: 87 + -87 = 0
0 + -9n = 24 + -87
-9n = 24 + -87

Combine like terms: 24 + -87 = -63
-9n = -63

Divide each side by '-9'.
n = 7

Simplifying
n = 7

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