3x+3(3x+6)=78

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Solution for 3x+3(3x+6)=78 equation:


Simplifying
3x + 3(3x + 6) = 78

Reorder the terms:
3x + 3(6 + 3x) = 78
3x + (6 * 3 + 3x * 3) = 78
3x + (18 + 9x) = 78

Reorder the terms:
18 + 3x + 9x = 78

Combine like terms: 3x + 9x = 12x
18 + 12x = 78

Solving
18 + 12x = 78

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 12x = 78 + -18

Combine like terms: 18 + -18 = 0
0 + 12x = 78 + -18
12x = 78 + -18

Combine like terms: 78 + -18 = 60
12x = 60

Divide each side by '12'.
x = 5

Simplifying
x = 5

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