Question

Помогите а) 4/7+5/6 б) 5/12+2/15 в) 3/7+5/14 г) 5/18+7/30 д) 13/25+7/10 е) 8/9+7/12 ж) 15/19+27/37 з) 4/21+5/7 и) 0,22+3/25+1/20

Answer 1

От а до д
дальше сам(а)

Answer 2

а) 4/7+5/6 = (24/42) + (35/42) = (24+35)/42 = 59/42

б) 5/12+2/15 = (25/60) + (8/60) = (25+8)/60 = 33/60 = 11/20

в) 3/7+5/14 = (18/42) + (15/42) = (18+15)/42 = 33/42 = 11/14

г) 5/18+7/30 = (25/90) + (21/90) = (25+21)/90 = 46/90 = 23/45

д) 13/25+7/10 = (52/100) + (175/100) = (52+175)/100 = 227/100

е) 8/9+7/12 = (96/108) + (63/108) = (96+63)/108 = 159/108 = 53/36

ж) 15/19+27/37 = (703/703) + (459/703) = (703+459)/703 = 1162/703

з) 4/21+5/7 = (4/21) + (15/21) = (4+15)/21 = 19/21

и) 0,22+3/25+1/20 = 0.22 + (12/100) + (5/100) = 0.22 + 0.12 + 0.05 = 0.39