1+9n=7n+9

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Solution for 1+9n=7n+9 equation:


Simplifying
1 + 9n = 7n + 9

Reorder the terms:
1 + 9n = 9 + 7n

Solving
1 + 9n = 9 + 7n

Solving for variable 'n'.

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

Add '-7n' to each side of the equation.
1 + 9n + -7n = 9 + 7n + -7n

Combine like terms: 9n + -7n = 2n
1 + 2n = 9 + 7n + -7n

Combine like terms: 7n + -7n = 0
1 + 2n = 9 + 0
1 + 2n = 9

Add '-1' to each side of the equation.
1 + -1 + 2n = 9 + -1

Combine like terms: 1 + -1 = 0
0 + 2n = 9 + -1
2n = 9 + -1

Combine like terms: 9 + -1 = 8
2n = 8

Divide each side by '2'.
n = 4

Simplifying
n = 4

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