=
х - 8,16 = 9,125
х = 9,125 + 8,16
х = 17,285
-------------------------
- 6х = 14,05
х = 14 1/20 : 6
х = 281/20 : 6
х = 281/120
х = 2 41/120
---------------------------
=
х : 43/10= - 71/13
х = - 71/13 * 43/10
х = - 3053/130
х = - 23 63/130
---------------------------
=
х = - 8,12 : - 11,44
х = 812/1144
х = 203/286
-------------------------
=
Ч = - 2,1 + 4 19/21
Ч = - 21/10 + 103/21
Ч = (-21*21)/210 + 1030/210
Ч = - 441/210 + 1030/21о
Ч = 589/210
Ч = 2 169/210
------------------------