-2/5x-7=21

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Solution for -2/5x-7=21 equation: 



-2/5x-7=21

We move all terms to the left:

-2/5x-7-(21)=0



Domain of the equation: 5x!=0

x!=0/5

x!=0

x∈R



We add all the numbers together, and all the variables

-2/5x-28=0

We multiply all the terms by the denominator


-28*5x-2=0

Wy multiply elements

-140x-2=0

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

-140x=2

x=2/-140

x=-1/70

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