4(5n-4n)+3(4n-5n)-3(n+5)=15

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Solution for 4(5n-4n)+3(4n-5n)-3(n+5)=15 equation:


Simplifying
4(5n + -4n) + 3(4n + -5n) + -3(n + 5) = 15

Combine like terms: 5n + -4n = 1n
4(1n) + 3(4n + -5n) + -3(n + 5) = 15

Remove parenthesis around (1n)
4 * 1n + 3(4n + -5n) + -3(n + 5) = 15

Multiply 4 * 1
4n + 3(4n + -5n) + -3(n + 5) = 15

Combine like terms: 4n + -5n = -1n
4n + 3(-1n) + -3(n + 5) = 15

Remove parenthesis around (-1n)
4n + 3 * -1n + -3(n + 5) = 15

Multiply 3 * -1
4n + -3n + -3(n + 5) = 15

Reorder the terms:
4n + -3n + -3(5 + n) = 15
4n + -3n + (5 * -3 + n * -3) = 15
4n + -3n + (-15 + -3n) = 15

Reorder the terms:
-15 + 4n + -3n + -3n = 15

Combine like terms: 4n + -3n = 1n
-15 + 1n + -3n = 15

Combine like terms: 1n + -3n = -2n
-15 + -2n = 15

Solving
-15 + -2n = 15

Solving for variable 'n'.

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

Add '15' to each side of the equation.
-15 + 15 + -2n = 15 + 15

Combine like terms: -15 + 15 = 0
0 + -2n = 15 + 15
-2n = 15 + 15

Combine like terms: 15 + 15 = 30
-2n = 30

Divide each side by '-2'.
n = -15

Simplifying
n = -15

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