(-5x)-10x=21

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Solution for (-5x)-10x=21 equation: 



(-5x)-10x=21

We move all terms to the left:

(-5x)-10x-(21)=0

We add all the numbers together, and all the variables

-10x+(-5x)-21=0

We get rid of parentheses

-10x-5x-21=0

We add all the numbers together, and all the variables

-15x-21=0

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

-15x=21

x=21/-15

x=-1+2/5

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