.3(2z+7)+10.4=0.7(2z-5)

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Solution for .3(2z+7)+10.4=0.7(2z-5) equation: 



.3(2z+7)+10.4=0.7(2z-5)

We move all terms to the left:

.3(2z+7)+10.4-(0.7(2z-5))=0

We multiply parentheses

0.6z-(0.7(2z-5))+2.1+10.4=0



We calculate terms in parentheses: -(0.7(2z-5)), so:

0.7(2z-5)

We multiply parentheses

1.4z-3.5

Back to the equation:

-(1.4z-3.5)



We add all the numbers together, and all the variables

0.6z-(1.4z-3.5)+12.5=0

We get rid of parentheses

0.6z-1.4z+3.5+12.5=0

We add all the numbers together, and all the variables

-0.8z+16=0

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

-0.8z=-16

z=-16/-0.8

z=+20

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