-84=-3(7n-7)

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Solution for -84=-3(7n-7) equation:


Simplifying
-84 = -3(7n + -7)

Reorder the terms:
-84 = -3(-7 + 7n)
-84 = (-7 * -3 + 7n * -3)
-84 = (21 + -21n)

Solving
-84 = 21 + -21n

Solving for variable 'n'.

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

Add '21n' to each side of the equation.
-84 + 21n = 21 + -21n + 21n

Combine like terms: -21n + 21n = 0
-84 + 21n = 21 + 0
-84 + 21n = 21

Add '84' to each side of the equation.
-84 + 84 + 21n = 21 + 84

Combine like terms: -84 + 84 = 0
0 + 21n = 21 + 84
21n = 21 + 84

Combine like terms: 21 + 84 = 105
21n = 105

Divide each side by '21'.
n = 5

Simplifying
n = 5

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