(1 3/4 -1 19/48)*х=1 2/3- 3 5/7
(7/4-67/48)*x=5/3-26/7
17/48x=-43/21
x=-43/21*48/17
x=-5 93/119
==============================
(1 2/3-37/75)*х=2 1/3-4 1/5
(5/3-37/75)*x=7/3-21/5
88/75x=-28/15
x=-28/15*75/88
x=-1 13/22
Вроде будет -34.887......
176(704:4)
815, 5 (815:5)
450, 3 (450:3)
189(567:3)