(400-20)•2=400•2-20•2 (80-1)•5=80•5-1•5 (25-9)•4=25•4-9•4 - вопрос №205815284002024002202801580515259425494201720717 от Pincode11 05.03.2020 07:01

Question

Математика: (400-20)•2=400•2-20•2 (80-1)•5=80•5-1•5 (25-9)•4=25•4-9•4 (20-1)•7=20•7-1•7

Pincode11 · Answer

(400-20)•2=400•2-20•2=800-40=760(80-1)•5=80•5-1•5=400-5=395(25-9)•4=25•4-9•4=100-36=64(20-1)•7=20•7-1•7=140-7=133...