解:40.16-(12.7+23.5)等于( 99/25 ),【即等于3.96】
∵已知需求出40.16-(12.7+23.5)等于多少
∴40.16 - (12.7 + 23.5)
= (40×100+16)/100 - [(12×10+7)/10 + (23×10+5)/10]
= 4016/100 - (127/10 + 235/10)
= 4016/100 - 362/10
= 4016/100 - 3620/100
= 396/100
= 99/25
= 3.96
答:40.16-(12.7+23.5)等于99/25,【即等于3.96】
40.16—(12.7+23.5)=5.4
40.16-(12.7+23.5)
=40.16-36.2
=3.96