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1.4=0.3z-0.4
We move all terms to the left:
1.4-(0.3z-0.4)=0
We get rid of parentheses
-0.3z+0.4+1.4=0
We add all the numbers together, and all the variables
-0.3z+1.8=0
We move all terms containing z to the left, all other terms to the right
-0.3z=-1.8
z=-1.8/-0.3
z=6+2.2204460492503E-16/0.3
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