Ответ:
1) \((20-13.7)\cdot 7.4+18:0.6=6.3\cdot 7.4+30=46.62+30=76.62\).
2) \(52-(15.54:1.48+3.4)\cdot 2.8=52-(10.5+3.4)\cdot 2.8=52-13.9\cdot 2.8=52-38.92=13.08\).
Ответ: 1) 76,62; 2) 13,08.
1) \((20-13.7)\cdot 7.4+18:0.6=6.3\cdot 7.4+30=46.62+30=76.62\).
2) \(52-(15.54:1.48+3.4)\cdot 2.8=52-(10.5+3.4)\cdot 2.8=52-13.9\cdot 2.8=52-38.92=13.08\).
Ответ: 1) 76,62; 2) 13,08.