3(2.1y-1.2)=4(0.85+0.7y)

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Solution for 3(2.1y-1.2)=4(0.85+0.7y) equation: 



3(2.1y-1.2)=4(0.85+0.7y)

We move all terms to the left:

3(2.1y-1.2)-(4(0.85+0.7y))=0

We add all the numbers together, and all the variables

3(2.1y-1.2)-(4(0.7y+0.85))=0

We multiply parentheses

6y-(4(0.7y+0.85))-3.6=0



We calculate terms in parentheses: -(4(0.7y+0.85)), so:

4(0.7y+0.85)

We multiply parentheses

0y+3.4

We add all the numbers together, and all the variables

y+3.4

Back to the equation:

-(y+3.4)



We get rid of parentheses

6y-y-3.4-3.6=0

We add all the numbers together, and all the variables

5y-7=0

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

5y=7

y=7/5

y=1+2/5

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