Question

помогите решить примеры                                                                    (1/2+0,25-1/6)*(6,4:80/3)+1/8=?                                                                       (2/3+5:25/4)*7/0,80,125+6/9=?                                                              (41/18-17/36)*18/65+(8/7-23/49):91/49+7/6=?

Answer 1

 ● -умножить,   /- разделить чертой 

1)  64/10 : 80/3=64/10 ●  3/80= 192/800=cокращаем=6/25

     6/25+1/8=60/250 +450/250=510/250=сокра.=2,04

2)  5 : 4/25=4/5

     4/5+2/3=12/15 +10/15=22/15

      22/15 ● не понятно дальше

3)   41/18-17/36=1478/648 - 306/648=1170/648

        1170/648 ● 18/65=сокращаем=9/18=1/2

        8/7-23/49=392/343-161/343=231/343

        231/343:91/49= 231/343: 49/91=11319/31213

        11319/31213+7/6=67914/187278+218491 /187278 =286405/ 187278=

       =1,5

      1,5+1,2=2,7