3(5n-7)=9

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Solution for 3(5n-7)=9 equation:


Simplifying
3(5n + -7) = 9

Reorder the terms:
3(-7 + 5n) = 9
(-7 * 3 + 5n * 3) = 9
(-21 + 15n) = 9

Solving
-21 + 15n = 9

Solving for variable 'n'.

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

Add '21' to each side of the equation.
-21 + 21 + 15n = 9 + 21

Combine like terms: -21 + 21 = 0
0 + 15n = 9 + 21
15n = 9 + 21

Combine like terms: 9 + 21 = 30
15n = 30

Divide each side by '15'.
n = 2

Simplifying
n = 2

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