3x+9+2x+21=6x-13

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Solution for 3x+9+2x+21=6x-13 equation:


Simplifying
3x + 9 + 2x + 21 = 6x + -13

Reorder the terms:
9 + 21 + 3x + 2x = 6x + -13

Combine like terms: 9 + 21 = 30
30 + 3x + 2x = 6x + -13

Combine like terms: 3x + 2x = 5x
30 + 5x = 6x + -13

Reorder the terms:
30 + 5x = -13 + 6x

Solving
30 + 5x = -13 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
30 + 5x + -6x = -13 + 6x + -6x

Combine like terms: 5x + -6x = -1x
30 + -1x = -13 + 6x + -6x

Combine like terms: 6x + -6x = 0
30 + -1x = -13 + 0
30 + -1x = -13

Add '-30' to each side of the equation.
30 + -30 + -1x = -13 + -30

Combine like terms: 30 + -30 = 0
0 + -1x = -13 + -30
-1x = -13 + -30

Combine like terms: -13 + -30 = -43
-1x = -43

Divide each side by '-1'.
x = 43

Simplifying
x = 43

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