7n+9=4n

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Solution for 7n+9=4n equation:


Simplifying
7n + 9 = 4n

Reorder the terms:
9 + 7n = 4n

Solving
9 + 7n = 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.
9 + 7n + -4n = 4n + -4n

Combine like terms: 7n + -4n = 3n
9 + 3n = 4n + -4n

Combine like terms: 4n + -4n = 0
9 + 3n = 0

Add '-9' to each side of the equation.
9 + -9 + 3n = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 3n = 0 + -9
3n = 0 + -9

Combine like terms: 0 + -9 = -9
3n = -9

Divide each side by '3'.
n = -3

Simplifying
n = -3

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