А) (13/17×8/9-4/17×8/9)×(11/16+3/8)=? б)(3/4-15/16)×(1-3 - вопрос №8597488131789417891116383415161327 от RAMINA1903 08.12.2020 10:31

Question

Математика: А) (13/17×8/9-4/17×8/9)×(11/16+3/8)=? б)(3/4-15/16)×(1-3 2/7)=? !

RAMINA1903 · Answer

A)13/17 * 8/9 = (13*8)/(17*9) = 104/1534/17 * 8/9 = (4*8)/(17*9) = 32/153104/153+32/153 = (103+32)/153 = 135/15311/16 + 3/8 = 11/16 + 6/16 = 17/1617/16 * 135/153 = (17*135)/(16*153) = 15/16b)3/4-15/16=12/16-15/16= -3/16что значит 1-3 2/7 я не знаю...