(x+12)+(2x+12)=78

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Solution for (x+12)+(2x+12)=78 equation:


Simplifying
(x + 12) + (2x + 12) = 78

Reorder the terms:
(12 + x) + (2x + 12) = 78

Remove parenthesis around (12 + x)
12 + x + (2x + 12) = 78

Reorder the terms:
12 + x + (12 + 2x) = 78

Remove parenthesis around (12 + 2x)
12 + x + 12 + 2x = 78

Reorder the terms:
12 + 12 + x + 2x = 78

Combine like terms: 12 + 12 = 24
24 + x + 2x = 78

Combine like terms: x + 2x = 3x
24 + 3x = 78

Solving
24 + 3x = 78

Solving for variable 'x'.

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

Add '-24' to each side of the equation.
24 + -24 + 3x = 78 + -24

Combine like terms: 24 + -24 = 0
0 + 3x = 78 + -24
3x = 78 + -24

Combine like terms: 78 + -24 = 54
3x = 54

Divide each side by '3'.
x = 18

Simplifying
x = 18

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