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

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


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

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

Reorder the terms:
-21 + 7n + -7n = 3n + -3

Combine like terms: 7n + -7n = 0
-21 + 0 = 3n + -3
-21 = 3n + -3

Reorder the terms:
-21 = -3 + 3n

Solving
-21 = -3 + 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
-21 + -3n = -3 + 3n + -3n

Combine like terms: 3n + -3n = 0
-21 + -3n = -3 + 0
-21 + -3n = -3

Add '21' to each side of the equation.
-21 + 21 + -3n = -3 + 21

Combine like terms: -21 + 21 = 0
0 + -3n = -3 + 21
-3n = -3 + 21

Combine like terms: -3 + 21 = 18
-3n = 18

Divide each side by '-3'.
n = -6

Simplifying
n = -6

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