4/5x-9=21

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Solution for 4/5x-9=21 equation: 



4/5x-9=21

We move all terms to the left:

4/5x-9-(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

4/5x-30=0

We multiply all the terms by the denominator


-30*5x+4=0

Wy multiply elements

-150x+4=0

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

-150x=-4

x=-4/-150

x=2/75

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