(-5 ЦЕЛЫХ 2/3·-2 ЦЕЛЫХ 2/17)-(0,12·-8 ЦЕЛЫХ 2/3)

(-5 2/3• -2 2/17) - (0,12• -8 2/3)= 13 1/25. Или = 13,04. 1)) (-5 2/3• -2 2/17)= 5 2/3• 2 2/17= (3•5+2)/3 • (17•2+2)/17= 17/3• 36/17= {сокращаем 3 и 36 на 3; 17 и 17 на 17} 1/1• 12/1= 12; 2)) (0,12• - 8 2/3)= 12/100• -(3•8+2)/3= {сокращаем 12/100 на 4} 3/25• -26/3= {сокращаем 3 и 3 на 3} 1/25• -26/1= -26/25= -1 1/25; 3)) 12- (-1 1/25)= 12+ 1 1/25= 13 1/25= 13,04.