Classify each number in as many ways as possible/? (28)0 $(30)5.010010001...?

Question

evalute each expression by using the order of operations
48.)1*(3x)=-5x

44.)x(1/x)=1, where x=/ o

47.)0=2x+2x +(-22x)

Answer 1

48. Doesn't make sense to me.
44. True
47. x= 0