A+2/4a=21

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Solution for A+2/4a=21 equation: 



+2/4A=21

We move all terms to the left:

+2/4A-(21)=0



Domain of the equation: 4A!=0

A!=0/4

A!=0

A∈R



We multiply all the terms by the denominator


-21*4A+2=0

Wy multiply elements

-84A+2=0

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

-84A=-2

A=-2/-84

A=1/42

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