12x+3(3)=81

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Solution for 12x+3(3)=81 equation: 


Simplifying
12x + 3(3) = 81

Multiply 3 * 3
12x + 9 = 81

Reorder the terms:
9 + 12x = 81

Solving
9 + 12x = 81

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 12x = 81 + -9

Combine like terms: 9 + -9 = 0
0 + 12x = 81 + -9
12x = 81 + -9

Combine like terms: 81 + -9 = 72
12x = 72

Divide each side by '12'.
x = 6

Simplifying
x = 6

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