(3*12)+(3*n)=57

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Solution for (3*12)+(3*n)=57 equation: 


Simplifying
(3 * 12) + (3n) = 57

Multiply 3 * 12
(36) + (3n) = 57
36 + (3n) = 57

Solving
36 + (3n) = 57

Solving for variable 'n'.

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

Add '-36' to each side of the equation.
36 + -36 + (3n) = 57 + -36

Combine like terms: 36 + -36 = 0
0 + (3n) = 57 + -36
(3n) = 57 + -36

Combine like terms: 57 + -36 = 21
(3n) = 21

Divide each side by '3'.
n = 7

Simplifying
n = 7

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