Fhfhfhejdhfhebcbfbdbcbrdhfhfbfhfhfhffhfhchfhdhchfhdhhchfjdhf
It’s d because it’s d because it’s d because it’s d
15) x=31/10
16)x=2
17)x=16/3
18)x=-2
19)2.5 hours
20) 32 hours
You mean -3/2 * -51/4???
use the calculator to multiply them and you will get 19.125