Question

выполните сложения 7/60+1/100+1/40, 5/14+2/21, 5/6+7/15, 2/165+1/273

Answer 1

1)7/60+1/100+1/40=91/600; а)7/60+1/100=35/300+3/300=38/300=19/150; б)19/150+1/40=76/600+15/600=91/600; /////2)5/14+2/21=30/84+8/84=38/84=19/42; ////3)5/6+7/15=25/30+14/30=39/30=1 3/10; ////4)2/165+1/273=546/45045+165/45045= 711/45045=79/5005