20/a+2=7

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Solution for 20/a+2=7 equation: 



20/a+2=7

We move all terms to the left:

20/a+2-(7)=0



Domain of the equation: a!=0

a∈R



We add all the numbers together, and all the variables

20/a-5=0

We multiply all the terms by the denominator


-5*a+20=0

We add all the numbers together, and all the variables

-5a+20=0

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

-5a=-20

a=-20/-5

a=+4

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