-4/5a=-4

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Solution for -4/5a=-4 equation: 



-4/5a=-4

We move all terms to the left:

-4/5a-(-4)=0



Domain of the equation: 5a!=0

a!=0/5

a!=0

a∈R



We add all the numbers together, and all the variables

-4/5a+4=0

We multiply all the terms by the denominator


4*5a-4=0

Wy multiply elements

20a-4=0

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

20a=4

a=4/20

a=1/5

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