Question 174771
write the fraction as a decimal 
17. 99/450 
Cancel whatever you can first.
Divide NUM and DEN by 9
= 11/50
Then, divide 50 into 11, or 5 into 1.1 - either way, you get 0.22
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18. 180/80 
Divide by 20
= 9/4
Then divide 4 into 9.  You get 2.25