4/5x+1/5x=21

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Solution for 4/5x+1/5x=21 equation: 



4/5x+1/5x=21

We move all terms to the left:

4/5x+1/5x-(21)=0



Domain of the equation: 5x!=0

x!=0/5

x!=0

x∈R



We multiply all the terms by the denominator


-21*5x+4+1=0

We add all the numbers together, and all the variables

-21*5x+5=0

Wy multiply elements

-105x+5=0

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

-105x=-5

x=-5/-105

x=1/21

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