9n-18=4n+7

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Solution for 9n-18=4n+7 equation:


Simplifying
9n + -18 = 4n + 7

Reorder the terms:
-18 + 9n = 4n + 7

Reorder the terms:
-18 + 9n = 7 + 4n

Solving
-18 + 9n = 7 + 4n

Solving for variable 'n'.

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

Add '-4n' to each side of the equation.
-18 + 9n + -4n = 7 + 4n + -4n

Combine like terms: 9n + -4n = 5n
-18 + 5n = 7 + 4n + -4n

Combine like terms: 4n + -4n = 0
-18 + 5n = 7 + 0
-18 + 5n = 7

Add '18' to each side of the equation.
-18 + 18 + 5n = 7 + 18

Combine like terms: -18 + 18 = 0
0 + 5n = 7 + 18
5n = 7 + 18

Combine like terms: 7 + 18 = 25
5n = 25

Divide each side by '5'.
n = 5

Simplifying
n = 5

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