8n-(4n+7)=9

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Solution for 8n-(4n+7)=9 equation:


Simplifying
8n + -1(4n + 7) = 9

Reorder the terms:
8n + -1(7 + 4n) = 9
8n + (7 * -1 + 4n * -1) = 9
8n + (-7 + -4n) = 9

Reorder the terms:
-7 + 8n + -4n = 9

Combine like terms: 8n + -4n = 4n
-7 + 4n = 9

Solving
-7 + 4n = 9

Solving for variable 'n'.

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

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

Combine like terms: -7 + 7 = 0
0 + 4n = 9 + 7
4n = 9 + 7

Combine like terms: 9 + 7 = 16
4n = 16

Divide each side by '4'.
n = 4

Simplifying
n = 4

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