3(0.7z+2.8)=7(1.5z+7.2)*

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Solution for 3(0.7z+2.8)=7(1.5z+7.2)* equation: 



3(0.7z+2.8)=7(1.5z+7.2)*

We move all terms to the left:

3(0.7z+2.8)-(7(1.5z+7.2)*)=0

We multiply parentheses

0z-(7(1.5z+7.2)*)+8.4=0



We calculate terms in parentheses: -(7(1.5z+7.2)*), so:

7(1.5z+7.2)*

We multiply parentheses

7z+50.4

Back to the equation:

-(7z+50.4)



We add all the numbers together, and all the variables

z-(7z+50.4)+8.4=0

We get rid of parentheses

z-7z-50.4+8.4=0

We add all the numbers together, and all the variables

-6z-42=0

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

-6z=42

z=42/-6

z=-7

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