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1.2z-1=2/5
We move all terms to the left:
1.2z-1-(2/5)=0
We add all the numbers together, and all the variables
1.2z-1-(+2/5)=0
We get rid of parentheses
1.2z-1-2/5=0
We multiply all the terms by the denominator
(1.2z)*5-2-1*5=0
We add all the numbers together, and all the variables
(+1.2z)*5-2-1*5=0
We add all the numbers together, and all the variables
(+1.2z)*5-7=0
We multiply parentheses
5z-7=0
We move all terms containing z to the left, all other terms to the right
5z=7
z=7/5
z=1+2/5
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