7(3n+3)=6(2n+2)+9

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Solution for 7(3n+3)=6(2n+2)+9 equation:


Simplifying
7(3n + 3) = 6(2n + 2) + 9

Reorder the terms:
7(3 + 3n) = 6(2n + 2) + 9
(3 * 7 + 3n * 7) = 6(2n + 2) + 9
(21 + 21n) = 6(2n + 2) + 9

Reorder the terms:
21 + 21n = 6(2 + 2n) + 9
21 + 21n = (2 * 6 + 2n * 6) + 9
21 + 21n = (12 + 12n) + 9

Reorder the terms:
21 + 21n = 12 + 9 + 12n

Combine like terms: 12 + 9 = 21
21 + 21n = 21 + 12n

Add '-21' to each side of the equation.
21 + -21 + 21n = 21 + -21 + 12n

Combine like terms: 21 + -21 = 0
0 + 21n = 21 + -21 + 12n
21n = 21 + -21 + 12n

Combine like terms: 21 + -21 = 0
21n = 0 + 12n
21n = 12n

Solving
21n = 12n

Solving for variable 'n'.

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

Add '-12n' to each side of the equation.
21n + -12n = 12n + -12n

Combine like terms: 21n + -12n = 9n
9n = 12n + -12n

Combine like terms: 12n + -12n = 0
9n = 0

Divide each side by '9'.
n = 0

Simplifying
n = 0

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