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4=z/8.2
We move all terms to the left:
4-(z/8.2)=0
We add all the numbers together, and all the variables
-(+z/8.2)+4=0
We get rid of parentheses
-z/8.2+4=0
We multiply all the terms by the denominator
-z+4*8.2=0
We add all the numbers together, and all the variables
-1z+32.8=0
We move all terms containing z to the left, all other terms to the right
-z=-32.8
z=-32.8/-1
z=32+0.8/1
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