2/7a-6=21

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Solution for 2/7a-6=21 equation: 



2/7a-6=21

We move all terms to the left:

2/7a-6-(21)=0



Domain of the equation: 7a!=0

a!=0/7

a!=0

a∈R



We add all the numbers together, and all the variables

2/7a-27=0

We multiply all the terms by the denominator


-27*7a+2=0

Wy multiply elements

-189a+2=0

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

-189a=-2

a=-2/-189

a=2/189

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