8/21=(-2x)/7

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Solution for 8/21=(-2x)/7 equation: 



8/21=(-2x)/7

We move all terms to the left:

8/21-((-2x)/7)=0

We calculate fractions


(-((-2x)*21)/()+()/()=0



We calculate terms in parentheses: +(-((-2x)*21)/()+()/(), so:

-((-2x)*21)/()+()/(

We add all the numbers together, and all the variables

-((-2x)*21)/()+1

We multiply all the terms by the denominator


-((-2x)*21)+1*()



We calculate terms in parentheses: -((-2x)*21), so:

(-2x)*21

We multiply parentheses

-42x

Back to the equation:

-(-42x)



We add all the numbers together, and all the variables

-(-42x)

We get rid of parentheses

42x

Back to the equation:

+(42x)



x=0/42

x=0

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