90=6-3(3n-7)

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Solution for 90=6-3(3n-7) equation:


Simplifying
90 = 6 + -3(3n + -7)

Reorder the terms:
90 = 6 + -3(-7 + 3n)
90 = 6 + (-7 * -3 + 3n * -3)
90 = 6 + (21 + -9n)

Combine like terms: 6 + 21 = 27
90 = 27 + -9n

Solving
90 = 27 + -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.
90 + 9n = 27 + -9n + 9n

Combine like terms: -9n + 9n = 0
90 + 9n = 27 + 0
90 + 9n = 27

Add '-90' to each side of the equation.
90 + -90 + 9n = 27 + -90

Combine like terms: 90 + -90 = 0
0 + 9n = 27 + -90
9n = 27 + -90

Combine like terms: 27 + -90 = -63
9n = -63

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

Simplifying
n = -7

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