15
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3/20 + 4/5 = 19/20note:4/5 * 4/4 = 16/20thus, 3/20 + 16/20 = 19/20
3/4 = 0.75 0.75 x 20 = 15 or 3/4 x 20/1 = 60/4 = 15
3/5 - 3/4 = 12/20 - 15/20 = (12 - 15)/20 = -3/20
Yes, it is equal to 15. One-fourth of 20 is 5. 3 x 5 = 15.
4 of 5 = 4x5=203 of 4= 3x4=1212-20=8or4/5 - 3/4 = 16/20 - 15/20 = 1/20