9+3/4a=21

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Solution for 9+3/4a=21 equation: 



9+3/4a=21

We move all terms to the left:

9+3/4a-(21)=0



Domain of the equation: 4a!=0

a!=0/4

a!=0

a∈R



We add all the numbers together, and all the variables

3/4a-12=0

We multiply all the terms by the denominator


-12*4a+3=0

Wy multiply elements

-48a+3=0

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

-48a=-3

a=-3/-48

a=1/16

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