Question

5/12+(1/12+1/4); б) 1/25+3/20+4/25+1/20; в) 3/5+5/6-7/30.

Answer 1

Пошаговое объяснение:

5/12+(1/12+1/4) =5\12+1\12+3\12=9\12=3\4

1/25+3/20+4/25+1/20 =4\100+15\100+16\100+5\100=40\100=2\5

3/5+5/6+7/30=18\30+25\30+7\30=50\30=1 2\3

Answer 2

а) 5/12 + (1/12 + 1/4) = 5/12 + (1/6) = 5/12 + 2/12 = 7/12

б) 1/25 + 3/20 + 4/25 + 1/20 = 4/100 + 15/100 + 16/100 + 5/100 = 40/100 = 2/5

в) 3/5 + 5/6 - 7/30 = 18/30 + 25/30 - 7/30 = 36/30 - 7/30 = 29/30