30-x=3(x+6)

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


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

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

Solving
30 + -1x = 18 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
30 + -1x + -3x = 18 + 3x + -3x

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

Combine like terms: 3x + -3x = 0
30 + -4x = 18 + 0
30 + -4x = 18

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

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

Combine like terms: 18 + -30 = -12
-4x = -12

Divide each side by '-4'.
x = 3

Simplifying
x = 3

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