3(n-7)-4n=12

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


Simplifying
3(n + -7) + -4n = 12

Reorder the terms:
3(-7 + n) + -4n = 12
(-7 * 3 + n * 3) + -4n = 12
(-21 + 3n) + -4n = 12

Combine like terms: 3n + -4n = -1n
-21 + -1n = 12

Solving
-21 + -1n = 12

Solving for variable 'n'.

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

Add '21' to each side of the equation.
-21 + 21 + -1n = 12 + 21

Combine like terms: -21 + 21 = 0
0 + -1n = 12 + 21
-1n = 12 + 21

Combine like terms: 12 + 21 = 33
-1n = 33

Divide each side by '-1'.
n = -33

Simplifying
n = -33

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