Ответ:
1) \(7.3\cdot1.5=10.95\); \(10.95-7.31=3.64\); \(3.64:2.8=1.3\); \(1.3+0.7=2\).
2) \(4.2\cdot5.6=23.52\); \(27.93-23.52=4.41\); \(4.41:2.1=2.1\); \(2.1-0.1=2\).
Ответ: 1) 2; 2) 2.
1) \(7.3\cdot1.5=10.95\); \(10.95-7.31=3.64\); \(3.64:2.8=1.3\); \(1.3+0.7=2\).
2) \(4.2\cdot5.6=23.52\); \(27.93-23.52=4.41\); \(4.41:2.1=2.1\); \(2.1-0.1=2\).
Ответ: 1) 2; 2) 2.