- а) \(4\frac35+7.1=11.7\), поэтому \((-15.64:11.7)\cdot2\frac25=-\frac43\cdot\frac{12}5=-\frac{16}5=-3.2\).
- б) \((0.4-\frac{11}{15})\cdot1\frac27-(\frac7{18}-0.5):1\frac16=(-\frac13)\cdot\frac97-(-\frac29):\frac76=-\frac37+\frac4{21}=-\frac5{21}\).
- в) \(0.8:\left((\frac23)^2+\frac59\right)=\frac45:\frac{13}9=\frac{36}{65}\).
- г) \((37.12-5.6:0.14):(1.21+3.4\cdot0.35)=16.8:2.4=7\).
- д) \((2.17\cdot3.7-1.83\cdot2.3):19.1=(8.029-4.209):19.1=3.82:19.1=0.2\).
- е) \(5\frac4{19}\cdot3\frac27+1\frac{15}{39}:\frac7{25}-1\frac23=\frac{99}{19}\cdot\frac{23}7+\frac{18}{13}\cdot\frac{25}7-\frac53=\frac{2277}{133}+\frac{450}{91}-\frac53=\frac{616}{21}=29\frac5{21}\).
- ё) \(\frac{(3\frac13-2\frac23)\cdot2.4}{(15.5+4.5):2\frac12}=\frac{\frac23\cdot\frac{12}5}{20:\frac52}=\frac{8}{5}:8=\frac15\).
- ж) \(5\frac37-(2\frac12+1\frac13):\frac16=\frac{38}7-\frac{23}6\cdot6=\frac{38}7-23=-\frac{123}7=-17\frac4}7\).
- з) \((2\frac7{15}+1\frac7{12})\cdot1\frac19-1\frac78=\frac{191}{60}\cdot\frac{10}9-\frac{15}8=\frac{1103}{216}\).
- и) \((6\frac17-5\frac34):\frac{11}{14}+(3\frac34-1\frac56):\frac16=\frac{17}{28}\cdot\frac{14}{11}+\frac{23}{12}\cdot6=\frac{17}{22}+\frac{23}2=\frac{135}{11}=12\frac3{11}\).
Ответ: а) −3,2; б) −5/21; в) 36/65; г) 7; д) 0,2; е) 29 5/21; ё) 1/5; ж) −17 4/7; з) 1103/216; и) 12 3/11.