0,4 = 4/10 = 2/5
0,72 = 72/100 = 18/25
0,35 = 35/100 = 7/20
0,92 = 92/100 =23/25
0,632 = 632/1000 = 316/250
<span>0,9724 = 9724/10000 = 2431/2500</span>
65700-(2000-1951)*122402:(54415+67987)=65651
54415+67987=122402
122402/122402=1
2000-1951=49
49*1=49
65700-49=65651
А)1)-1 11/18-7/12=-29/18-7/12=-58/36+21/36=-37/36=-1 1/36
2)5/6-(-1 1/36)=5/6+37/36=30/36+36/36=96/36=2 2/3-ответ
б)1)27/28:9/14=27/28*14/9=3/2
2)2 5/8*(-6/7)=21/8*(-6/7)=-9/4
3)3/2+(-9/4)=6/4+(-9/4)=-3/4-ответ