(4,8 - 5 3/14) - ( -4 3/35+ 4 8/35)=<span>(4 8/10 - 5 3/14) - 5/35=</span>
=(4 4/5 - 5 3/14) - 5/35=<span>(4 56/70 - 5 15/70) - 5/35=
</span><span>=-29/70-5/35=-29/70-10/70=-39/70
</span>
18:4=4 2/4 24:9=2 6/9 52:32=1 20/32 65:10=6 5/10 78:18=4 6/18 99:55=1 44/55
4% -0,1634
100%- х
х=(0,1634·100)/4=4,085