Answer:
1 7/10
Explanation:
4 1/4 = 17/4
2 11/20 = 51/20
common denominator is 20
4 times 5 is 20 so use 17 times 5 = 85
85 - 51 = 34
34/20 = 1 14/20
simplified is 1 7/10
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