A=4/(5x+20)-7

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Solution for A=4/(5x+20)-7 equation: 



=4/(5A+20)-7

We move all terms to the left:

-(4/(5A+20)-7)=0



Domain of the equation: (5A+20)-7)!=0

A∈R



We multiply all the terms by the denominator


-(4=0

We add all the numbers together, and all the variables

=0

A=0/1

A=0

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