6(x+1)+3x=-21

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Solution for 6(x+1)+3x=-21 equation:


Simplifying
6(x + 1) + 3x = -21

Reorder the terms:
6(1 + x) + 3x = -21
(1 * 6 + x * 6) + 3x = -21
(6 + 6x) + 3x = -21

Combine like terms: 6x + 3x = 9x
6 + 9x = -21

Solving
6 + 9x = -21

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 9x = -21 + -6

Combine like terms: 6 + -6 = 0
0 + 9x = -21 + -6
9x = -21 + -6

Combine like terms: -21 + -6 = -27
9x = -27

Divide each side by '9'.
x = -3

Simplifying
x = -3

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