Вычислитеа)1/6+1/9,б)2/9 +5/6,в)2/9+3/8,г)2/10+6/15д)3/10+2/12

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а)1/6+1/9 = 3/18+2/18=5/18б) 2/9+5/6 = 4/18+15/18 = 19/18 = 1 1/18в)2/9+3/8 = 16/72 + 27/72 = 43/72г) 2/10+6/15 = 6/30 + 12/30 = 18/30 = 3/5д)3/10 + 2/12 = 18/60 + 10/60 = 28/60 = 7/15