x+9+5x=21+x

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Solution for x+9+5x=21+x equation:


Simplifying
x + 9 + 5x = 21 + x

Reorder the terms:
9 + x + 5x = 21 + x

Combine like terms: x + 5x = 6x
9 + 6x = 21 + x

Solving
9 + 6x = 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.
9 + 6x + -1x = 21 + x + -1x

Combine like terms: 6x + -1x = 5x
9 + 5x = 21 + x + -1x

Combine like terms: x + -1x = 0
9 + 5x = 21 + 0
9 + 5x = 21

Add '-9' to each side of the equation.
9 + -9 + 5x = 21 + -9

Combine like terms: 9 + -9 = 0
0 + 5x = 21 + -9
5x = 21 + -9

Combine like terms: 21 + -9 = 12
5x = 12

Divide each side by '5'.
x = 2.4

Simplifying
x = 2.4

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