(4 1/12*1 5/7-5 2/9)*3/8 помогите срочно не могу
(49/12*12/7-47/9)*3/8=(7-47/9)*3/8=(63/9-47/9)*3/8=16/9*3/8=2/3
1) 4 1/12 * 1 5/7 = 49/12 * 12/7 = 588/84 = 21/3 2) 21/3 - 5 2/9= 21/3 - 47/9 = 63/9 - 47/9 = 16/9 3) 19/9 * 3/8 = 48/72 = 2/3