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4/5a+(5)=0
Domain of the equation: 5a!=0We multiply all the terms by the denominator
a!=0/5
a!=0
a∈R
5*5a+4=0
Wy multiply elements
25a+4=0
We move all terms containing a to the left, all other terms to the right
25a=-4
a=-4/25
a=-4/25
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