<span>6 целых 3/4 - (9,35 - 7,23)=4 63/100</span>
<span>1)9.35-7.23=2.12</span>
<span>2)6 3/4-2.12=27/4=2.12=6.75-2.12=4.63=4 63/100</span>
3целых 2/5 - (0,9 - 0,45)=2 19/20
1)0.9-0.45=0.45
2)3 2/5-0.45=17/5-0.45=3.4-0.45=2.95=2 95/100=2 19/20
<span> (12,4 - 9,35) - 2целых 12/25=57/100</span>
<span>1)12.4-9.35=3.05</span>
<span>2)3.05-2 12/25=3.05-62/25=3.05-2.48=0.57=57/100</span>
(27,61 - 8,11) - 4целых 1/20=15 9/20
1)27.61-8.11=19.5
2)19.5-4 1/20=19.5-81/20=19.5-4.05=15.45=15 45/100=15 9/20