3x-18=-3(x+7)

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Solution for 3x-18=-3(x+7) equation:


Simplifying
3x + -18 = -3(x + 7)

Reorder the terms:
-18 + 3x = -3(x + 7)

Reorder the terms:
-18 + 3x = -3(7 + x)
-18 + 3x = (7 * -3 + x * -3)
-18 + 3x = (-21 + -3x)

Solving
-18 + 3x = -21 + -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.
-18 + 3x + 3x = -21 + -3x + 3x

Combine like terms: 3x + 3x = 6x
-18 + 6x = -21 + -3x + 3x

Combine like terms: -3x + 3x = 0
-18 + 6x = -21 + 0
-18 + 6x = -21

Add '18' to each side of the equation.
-18 + 18 + 6x = -21 + 18

Combine like terms: -18 + 18 = 0
0 + 6x = -21 + 18
6x = -21 + 18

Combine like terms: -21 + 18 = -3
6x = -3

Divide each side by '6'.
x = -0.5

Simplifying
x = -0.5

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