75=3(-3n-5)

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Solution for 75=3(-3n-5) equation:


Simplifying
75 = 3(-3n + -5)

Reorder the terms:
75 = 3(-5 + -3n)
75 = (-5 * 3 + -3n * 3)
75 = (-15 + -9n)

Solving
75 = -15 + -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.
75 + 9n = -15 + -9n + 9n

Combine like terms: -9n + 9n = 0
75 + 9n = -15 + 0
75 + 9n = -15

Add '-75' to each side of the equation.
75 + -75 + 9n = -15 + -75

Combine like terms: 75 + -75 = 0
0 + 9n = -15 + -75
9n = -15 + -75

Combine like terms: -15 + -75 = -90
9n = -90

Divide each side by '9'.
n = -10

Simplifying
n = -10

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