3x-11x=21+x-15

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Solution for 3x-11x=21+x-15 equation: 



3x-11x=21+x-15

We move all terms to the left:

3x-11x-(21+x-15)=0

We add all the numbers together, and all the variables

3x-11x-(x+6)=0

We add all the numbers together, and all the variables

-8x-(x+6)=0

We get rid of parentheses

-8x-x-6=0

We add all the numbers together, and all the variables

-9x-6=0

We move all terms containing x to the left, all other terms to the right

-9x=6

x=6/-9

x=-2/3

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