tanyasumenkova (480:8)+(960:6)-(19х7)=60±160-133=87
(640:8)+(480:3)-(23х4)=80+160-92=148
(70х8)-((42:(100-94))х50)=560-350=210
(60х7)-((56:(19-12))х40)=420-320=100

irка010708 1. 480 :8+960 :6-19×7=89
480:8=60
960:6=160
19×7=133
60 +160 =220
220-133=89
2. 640 :8+480:3-23×4=148
640:8=80
480:3=160
23×4=92
80+160 =240
240-92=148
3. 70×8-42: (100-94)×50=160
100 - 94=6
42:6=8
8×50=400
70×8=560
560-400 =160
4. 60×7-56:(19-12)×40 =100
19-12=7
56:7=8
8×40=320
60 ×7= 420
420-320=100