3<x≤7 ∩ 5≤x≤9
---o*-->x **>x
3 7 5 9
x∈(3; 7] ∩ x∈[5; 9]
o***>x
3 5 7 9
(3; 7] ∩ [5; 9] = [5; 7]
3<x≤7 U 5≤x≤9
---o*-->x **>x
3 7 5 9
x∈(3; 7] ∪ x∈[5; 9]
o***>x
3 5 7 9
(3; 7] ∪ [5; 9] = (3; 9]
3<x≤7 ∩ 5≤x≤9
---o*-->x **>x
3 7 5 9
x∈(3; 7] ∩ x∈[5; 9]
o***>x
3 5 7 9
(3; 7] ∩ [5; 9] = [5; 7]
3<x≤7 U 5≤x≤9
---o*-->x **>x
3 7 5 9
x∈(3; 7] ∪ x∈[5; 9]
o***>x
3 5 7 9
(3; 7] ∪ [5; 9] = (3; 9]
21,004*6,5=136.526
45,34*20,01=907.2534
а ЭТИ ПРИМЕРЫ РЕШАТЬ ПО ЗАКОНАМ И НАПИШИ ПО КАКИМ ЗАКОНАМ НАПИСАЛА
5*79,23*0,2=79.23*1=79.23
72,3*0,25*0,4=72.3*0.1=7.23
1,25*500*0.2*0,08=0.1*100=10
579*5*0,002=579*0.014=5.79
27,3*0,5*2=27.3*1=27.3
0,25*53,34*4=53.34*1=53.34
2,5*0,4*50*0,08=1*4=4
44,81*125*0,08=44.81*10=448.1