7-(-3n-15)=8n+4(n+4)-12

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Solution for 7-(-3n-15)=8n+4(n+4)-12 equation:


Simplifying
7 + -1(-3n + -15) = 8n + 4(n + 4) + -12

Reorder the terms:
7 + -1(-15 + -3n) = 8n + 4(n + 4) + -12
7 + (-15 * -1 + -3n * -1) = 8n + 4(n + 4) + -12
7 + (15 + 3n) = 8n + 4(n + 4) + -12

Combine like terms: 7 + 15 = 22
22 + 3n = 8n + 4(n + 4) + -12

Reorder the terms:
22 + 3n = 8n + 4(4 + n) + -12
22 + 3n = 8n + (4 * 4 + n * 4) + -12
22 + 3n = 8n + (16 + 4n) + -12

Reorder the terms:
22 + 3n = 16 + -12 + 8n + 4n

Combine like terms: 16 + -12 = 4
22 + 3n = 4 + 8n + 4n

Combine like terms: 8n + 4n = 12n
22 + 3n = 4 + 12n

Solving
22 + 3n = 4 + 12n

Solving for variable 'n'.

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

Add '-12n' to each side of the equation.
22 + 3n + -12n = 4 + 12n + -12n

Combine like terms: 3n + -12n = -9n
22 + -9n = 4 + 12n + -12n

Combine like terms: 12n + -12n = 0
22 + -9n = 4 + 0
22 + -9n = 4

Add '-22' to each side of the equation.
22 + -22 + -9n = 4 + -22

Combine like terms: 22 + -22 = 0
0 + -9n = 4 + -22
-9n = 4 + -22

Combine like terms: 4 + -22 = -18
-9n = -18

Divide each side by '-9'.
n = 2

Simplifying
n = 2

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