А)3\11+5\22; б)11\12-7\15; в)11\15-3\20+1\30.

Question

А)3\11+5\22; б)11\12-7\15; в)11\15-3\20+1\30.

Answer 1

3/11 + 5/22 = 6/22 + 5/22 = 11/22 = 1/2
11/12 - 7/15 = 55/60 - 28/60 = 27/60 = 9/20
11/15 - 3/20 + 1/30 = 44/60 - 9/60 + 2/60 = 37/60