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0.4z/1.5z=-7/5
We move all terms to the left:
0.4z/1.5z-(-7/5)=0
Domain of the equation: 1.5z!=0We get rid of parentheses
z!=0/1.5
z!=0
z∈R
0.4z/1.5z+7/5=0
We calculate fractions
(0.4z*5)/(1.5z*5)+7z/(1.5z*5)=0
We add all the numbers together, and all the variables
(+0.4z*5)/(+1.5z*5)+7z/(+1.5z*5)=0
We multiply all the terms by the denominator
(+0.4z*5)+7z=0
We add all the numbers together, and all the variables
7z+(+0.4z*5)=0
We get rid of parentheses
7z+0.4z*5=0
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