78=3x+3(x+6)

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


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

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

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

Combine like terms: 3x + 3x = 6x
78 = 18 + 6x

Solving
78 = 18 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
78 + -6x = 18 + 6x + -6x

Combine like terms: 6x + -6x = 0
78 + -6x = 18 + 0
78 + -6x = 18

Add '-78' to each side of the equation.
78 + -78 + -6x = 18 + -78

Combine like terms: 78 + -78 = 0
0 + -6x = 18 + -78
-6x = 18 + -78

Combine like terms: 18 + -78 = -60
-6x = -60

Divide each side by '-6'.
x = 10

Simplifying
x = 10

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