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1.5-z/0.4=-7.75
We move all terms to the left:
1.5-z/0.4-(-7.75)=0
We add all the numbers together, and all the variables
-z/0.4+9.25=0
We multiply all the terms by the denominator
-z+(9.25)*0.4=0
We add all the numbers together, and all the variables
-1z+3.7=0
We move all terms containing z to the left, all other terms to the right
-z=-3.7
z=-3.7/-1
z=3+0.7/1
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