Question

Реши неравенство −(9d+6)+(d−7)>0, помогите!

Answer 1

-9d-6+d-7>0
-8d>13
d<13/-8
d<- 1 5/8

Answer 2

-(9d+6)+(d-7)>0
-9d-6+d-7>0
-8d-13>0
-8d>13
d<-13/8=d<-1 5/8 = d<-1,625