Выполните действия: ж) 7/11*((3/7)+5/7); з) (7/12-3/16-5/24)+(1/4).

Спасибо

ж) 7/11 * (3/7 + 5/7) = 7/11 * 8/7 = 8/111) 3/7 + 5/7 = 8/72) 7/11 * 8/7 = (1*8)/(11*1) = 8/11з) (7/12 - 3/16 - 5/24) + 1/4 = 7/161) 7/12 - 3/16 = 28/48 - 9/48 = 19/482) 19/48 - 5/24 = 19/48 - 10/48 = 9/48 = 3/163) 3/16 + 1/4 = 3/16 + 4/16 = 7/16