3(x+7)+3x=x

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


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

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

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

Solving
21 + 6x = 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.
21 + 6x + -1x = x + -1x

Combine like terms: 6x + -1x = 5x
21 + 5x = x + -1x

Combine like terms: x + -1x = 0
21 + 5x = 0

Add '-21' to each side of the equation.
21 + -21 + 5x = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 5x = 0 + -21
5x = 0 + -21

Combine like terms: 0 + -21 = -21
5x = -21

Divide each side by '5'.
x = -4.2

Simplifying
x = -4.2

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