(24.73-9.92)+(5.37-11.08)
=(24.73+5.37)-(9.92+11.08)
=30-20
=10
(13.1-9.28)-(4.5-2.74)
=(13.1-4.5)-(9.28-2.74)
=8.6-6.54
=2.06都看不懂,求详解(24.73-9.92)+(5.37-11.08)=24.73+5.37-9.92-11.08=(24.73+5.37)-(9.92+11.08)=30-20=10(13.1-9.28)-(4.5-2.74)=13.1-4.5-9.28+2.74=(13.1-4.5)-(9.28-2.74)=8.6-6.54=2.06
