2200*2730/(5460*1375)=2200*1/(2*1375)=1100/1375=100/125=4/5=0,8
5610*4459/(2310*3822)=17*4459/(7*3822)=(17*7/7*6)=17/6=2 5/6
5/6 - 3/22 =(5 × 11 - 3 × 3)= 55/66 - 9/66 = 46/66 = 23/33
11/18 - 11/12 = 22/36 - 33/36 = - 11/36
7/8 - 3/14 = 49/56 - 12/56 = 37/56
1)(501-29)=473,
2) 472÷2=236
3 1/7-5/7= 3 4/7
4Х+5Х при Х=0,1
4*0,1=0.4
5*0,1=0,5
0,4+0,5=0,9