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0.3(4z+5)+4.5=0.5(4z-4)
We move all terms to the left:
0.3(4z+5)+4.5-(0.5(4z-4))=0
We multiply parentheses
1.2z-(0.5(4z-4))+1.5+4.5=0
We calculate terms in parentheses: -(0.5(4z-4)), so:We add all the numbers together, and all the variables
0.5(4z-4)
We multiply parentheses
2z-2
Back to the equation:
-(2z-2)
1.2z-(2z-2)+6=0
We get rid of parentheses
1.2z-2z+2+6=0
We add all the numbers together, and all the variables
-0.8z+8=0
We move all terms containing z to the left, all other terms to the right
-0.8z=-8
z=-8/-0.8
z=+10
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