0.3y+0.9=0.2-0.4y

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Solution for 0.3y+0.9=0.2-0.4y equation: 



0.3y+0.9=0.2-0.4y

We move all terms to the left:

0.3y+0.9-(0.2-0.4y)=0

We add all the numbers together, and all the variables

0.3y-(-0.4y+0.2)+0.9=0

We get rid of parentheses

0.3y+0.4y-0.2+0.9=0

We add all the numbers together, and all the variables

0.7y+0.7=0

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

0.7y=-0.7

y=-0.7/0.7

y=-1

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