3.9=1.4-0.7y

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Solution for 3.9=1.4-0.7y equation: 



3.9=1.4-0.7y

We move all terms to the left:

3.9-(1.4-0.7y)=0

We add all the numbers together, and all the variables

-(-0.7y+1.4)+3.9=0

We get rid of parentheses

0.7y-1.4+3.9=0

We add all the numbers together, and all the variables

0.7y+2.5=0

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

0.7y=-2.5

y=-2.5/0.7

y=-3+0.4/0.7

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