4.2(9y-1)=99-7(3-4y)

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Solution for 4.2(9y-1)=99-7(3-4y) equation: 



4.2(9y-1)=99-7(3-4y)

We move all terms to the left:

4.2(9y-1)-(99-7(3-4y))=0

We add all the numbers together, and all the variables

4.2(9y-1)-(99-7(-4y+3))=0

We multiply parentheses

37.8y-(99-7(-4y+3))-4.2=0



We calculate terms in parentheses: -(99-7(-4y+3)), so:

99-7(-4y+3)

determiningTheFunctionDomain
-7(-4y+3)+99

We multiply parentheses

28y-21+99

We add all the numbers together, and all the variables

28y+78

Back to the equation:

-(28y+78)



We get rid of parentheses

37.8y-28y-78-4.2=0

We add all the numbers together, and all the variables

9.8y-82.2=0

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

9.8y=82.2

y=82.2/9.8

y=8+1/2.5789473684211

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