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z-2.1/3=1.2/3
We move all terms to the left:
z-2.1/3-(1.2/3)=0
We add all the numbers together, and all the variables
z-2.1/3-(+1.2/3)=0
We get rid of parentheses
z-2.1/3-1.2/3=0
We multiply all the terms by the denominator
z*3-2.1-1.2=0
We add all the numbers together, and all the variables
z*3-3.3=0
Wy multiply elements
3z-3.3=0
We move all terms containing z to the left, all other terms to the right
3z=3.3
z=3.3/3
z=1+0.3/3
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