3(x+9)=x-21

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Solution for 3(x+9)=x-21 equation:


Simplifying
3(x + 9) = x + -21

Reorder the terms:
3(9 + x) = x + -21
(9 * 3 + x * 3) = x + -21
(27 + 3x) = x + -21

Reorder the terms:
27 + 3x = -21 + x

Solving
27 + 3x = -21 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
27 + 3x + -1x = -21 + x + -1x

Combine like terms: 3x + -1x = 2x
27 + 2x = -21 + x + -1x

Combine like terms: x + -1x = 0
27 + 2x = -21 + 0
27 + 2x = -21

Add '-27' to each side of the equation.
27 + -27 + 2x = -21 + -27

Combine like terms: 27 + -27 = 0
0 + 2x = -21 + -27
2x = -21 + -27

Combine like terms: -21 + -27 = -48
2x = -48

Divide each side by '2'.
x = -24

Simplifying
x = -24

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