3(n-9)-(4-n)=

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Solution for 3(n-9)-(4-n)= equation:


Simplifying
3(n + -9) + -1(4 + -1n) = 0

Reorder the terms:
3(-9 + n) + -1(4 + -1n) = 0
(-9 * 3 + n * 3) + -1(4 + -1n) = 0
(-27 + 3n) + -1(4 + -1n) = 0
-27 + 3n + (4 * -1 + -1n * -1) = 0
-27 + 3n + (-4 + 1n) = 0

Reorder the terms:
-27 + -4 + 3n + 1n = 0

Combine like terms: -27 + -4 = -31
-31 + 3n + 1n = 0

Combine like terms: 3n + 1n = 4n
-31 + 4n = 0

Solving
-31 + 4n = 0

Solving for variable 'n'.

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

Add '31' to each side of the equation.
-31 + 31 + 4n = 0 + 31

Combine like terms: -31 + 31 = 0
0 + 4n = 0 + 31
4n = 0 + 31

Combine like terms: 0 + 31 = 31
4n = 31

Divide each side by '4'.
n = 7.75

Simplifying
n = 7.75

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