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

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


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

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

Reorder the terms:
-7 + 7n = 9(9 + n)
-7 + 7n = (9 * 9 + n * 9)
-7 + 7n = (81 + 9n)

Solving
-7 + 7n = 81 + 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.
-7 + 7n + -9n = 81 + 9n + -9n

Combine like terms: 7n + -9n = -2n
-7 + -2n = 81 + 9n + -9n

Combine like terms: 9n + -9n = 0
-7 + -2n = 81 + 0
-7 + -2n = 81

Add '7' to each side of the equation.
-7 + 7 + -2n = 81 + 7

Combine like terms: -7 + 7 = 0
0 + -2n = 81 + 7
-2n = 81 + 7

Combine like terms: 81 + 7 = 88
-2n = 88

Divide each side by '-2'.
n = -44

Simplifying
n = -44

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