2(2.1)-5y=-4

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Solution for 2(2.1)-5y=-4 equation: 



2(2.1)-5y=-4

We move all terms to the left:

2(2.1)-5y-(-4)=0

We add all the numbers together, and all the variables

-5y+8.2=0

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

-5y=-8.2

y=-8.2/-5

y=1+2.6666666666667/4.1666666666667

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