.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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