4=-2/5y

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Solution for 4=-2/5y equation: 



4=-2/5y

We move all terms to the left:

4-(-2/5y)=0



Domain of the equation: 5y)!=0

y!=0/1

y!=0

y∈R



We get rid of parentheses

2/5y+4=0

We multiply all the terms by the denominator


4*5y+2=0

Wy multiply elements

20y+2=0

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

20y=-2

y=-2/20

y=-1/10

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