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-2x+3=5
-2x=2
x=-1
-2x+3=-3
-2x=-6
x=3
D=<-1,3)
b)
-2x+3=1/2
-2x=-5/2
x=5/4
-2x+3=-51/3
-2x=-17-3
-2x=-10
x=5
D=(5/4, 5)