Question

9/10x5/6x8/9 =?
would that be 6/8 ?

also the temperature ranged from -37 F to 103 F How many degrees was the temperature for the year?
would you just take the difference between the two?

Answer 1

Online use "*" to indicate, because often "x" is used to indicate an unknown.

9/10*5/6*8/9 = (9*5*8)/(10*6*9) = 360/540 = 6/9

Range = highest value - lowest value.