3n+5(n+3)=2(n-4)-7

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Solution for 3n+5(n+3)=2(n-4)-7 equation:


Simplifying
3n + 5(n + 3) = 2(n + -4) + -7

Reorder the terms:
3n + 5(3 + n) = 2(n + -4) + -7
3n + (3 * 5 + n * 5) = 2(n + -4) + -7
3n + (15 + 5n) = 2(n + -4) + -7

Reorder the terms:
15 + 3n + 5n = 2(n + -4) + -7

Combine like terms: 3n + 5n = 8n
15 + 8n = 2(n + -4) + -7

Reorder the terms:
15 + 8n = 2(-4 + n) + -7
15 + 8n = (-4 * 2 + n * 2) + -7
15 + 8n = (-8 + 2n) + -7

Reorder the terms:
15 + 8n = -8 + -7 + 2n

Combine like terms: -8 + -7 = -15
15 + 8n = -15 + 2n

Solving
15 + 8n = -15 + 2n

Solving for variable 'n'.

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

Add '-2n' to each side of the equation.
15 + 8n + -2n = -15 + 2n + -2n

Combine like terms: 8n + -2n = 6n
15 + 6n = -15 + 2n + -2n

Combine like terms: 2n + -2n = 0
15 + 6n = -15 + 0
15 + 6n = -15

Add '-15' to each side of the equation.
15 + -15 + 6n = -15 + -15

Combine like terms: 15 + -15 = 0
0 + 6n = -15 + -15
6n = -15 + -15

Combine like terms: -15 + -15 = -30
6n = -30

Divide each side by '6'.
n = -5

Simplifying
n = -5

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