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20 - 11 = 9
-11 minus -20 is 9
19/20 minus 11/12 = 1/30
Answer : 130
20 minus 9 is 11.
8/15 minus 7/20 is 11/60
(-11) x (-10) + (-20) 110 + (-20) 90
Zero
5
9 - (-11) = 20
16/20 - 5/20 = 11/20
11/20
It is: 11/20