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24/5z=420
We move all terms to the left:
24/5z-(420)=0
Domain of the equation: 5z!=0We multiply all the terms by the denominator
z!=0/5
z!=0
z∈R
-420*5z+24=0
Wy multiply elements
-2100z+24=0
We move all terms containing z to the left, all other terms to the right
-2100z=-24
z=-24/-2100
z=2/175
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