30-x=3(x+6)+x

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Solution for 30-x=3(x+6)+x equation: 


Simplifying
30 + -1x = 3(x + 6) + x

Reorder the terms:
30 + -1x = 3(6 + x) + x
30 + -1x = (6 * 3 + x * 3) + x
30 + -1x = (18 + 3x) + x

Combine like terms: 3x + x = 4x
30 + -1x = 18 + 4x

Solving
30 + -1x = 18 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
30 + -1x + -4x = 18 + 4x + -4x

Combine like terms: -1x + -4x = -5x
30 + -5x = 18 + 4x + -4x

Combine like terms: 4x + -4x = 0
30 + -5x = 18 + 0
30 + -5x = 18

Add '-30' to each side of the equation.
30 + -30 + -5x = 18 + -30

Combine like terms: 30 + -30 = 0
0 + -5x = 18 + -30
-5x = 18 + -30

Combine like terms: 18 + -30 = -12
-5x = -12

Divide each side by '-5'.
x = 2.4

Simplifying
x = 2.4

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