4-(0.9+3)=y

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Solution for 4-(0.9+3)=y equation: 



4-(0.9+3)=y

We move all terms to the left:

4-(0.9+3)-(y)=0

We add all the numbers together, and all the variables

-y+4-(3.9)=0

We add all the numbers together, and all the variables

-1y+0.1=0

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

-y=-0.1

y=-0.1/-1

y=0.1/1

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