сократите дроби 8*11/33*4,18*25/75*12/6*7+7*5/49

Сократите дроби 8*11/33*4,18*25/75*12/6*7+7*5/49 =8/1• 11/33• 418/100• 25/75• 12/6•7 + 7•5/49= {сокращаем 11/33 на 11; 418/100 на 2; 25/75 на 25; 12/6 на 6; 7/49 на 7; } 8/1• 1/3• 209/50• 1/3• 2/1•7+ 1•5/7= 8/3• 209/50• 2/3•7+ 5/7={сокращаем 50 и 2 на 2} 8/3• 209/25• 1/3•7+ 5/7=(8•209)/(3•25•3•7)+ 5/7=(8•209)/(3•25•3•7)+ (5•3•25•3)/(7•3•25•3)= 1672/1575+ 1125/1575= 1 97/1575+ 1125/1575= 1 1222/1575. Если там 4/18 8*11/33*4/18*25/75*12/6*7+7*5/49 =8/1• 11/33• 4/18• 25/75• 12/6•7 + 7•5/49= (Сокращаем 11/33 на 11; 4/18 на 2; 25/75 на 25; 12и 6 на 6; 7 и 49 на 7)8/1• 1/3• 2/9• 1/3• 2/1•7+ 1•5/7=32/567+ 5/7= 32/567+ (5•81)/(7•81)=32/567+ 405/567= 437/567