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0.60(2-300)+0.05z=0.70z-205
We move all terms to the left:
0.60(2-300)+0.05z-(0.70z-205)=0
We add all the numbers together, and all the variables
0.05z-(0.70z-205)+0.60(-298)=0
We add all the numbers together, and all the variables
0.05z-(0.70z-205)-178.8=0
We get rid of parentheses
0.05z-0.70z+205-178.8=0
We add all the numbers together, and all the variables
-0.65z+26.2=0
We move all terms containing z to the left, all other terms to the right
-0.65z=-26.2
z=-26.2/-0.65
z=40+0.2/0.65
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