7(3n-3)=9(n+1)+3

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Solution for 7(3n-3)=9(n+1)+3 equation:


Simplifying
7(3n + -3) = 9(n + 1) + 3

Reorder the terms:
7(-3 + 3n) = 9(n + 1) + 3
(-3 * 7 + 3n * 7) = 9(n + 1) + 3
(-21 + 21n) = 9(n + 1) + 3

Reorder the terms:
-21 + 21n = 9(1 + n) + 3
-21 + 21n = (1 * 9 + n * 9) + 3
-21 + 21n = (9 + 9n) + 3

Reorder the terms:
-21 + 21n = 9 + 3 + 9n

Combine like terms: 9 + 3 = 12
-21 + 21n = 12 + 9n

Solving
-21 + 21n = 12 + 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.
-21 + 21n + -9n = 12 + 9n + -9n

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

Combine like terms: 9n + -9n = 0
-21 + 12n = 12 + 0
-21 + 12n = 12

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

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

Combine like terms: 12 + 21 = 33
12n = 33

Divide each side by '12'.
n = 2.75

Simplifying
n = 2.75

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