А (3x+4)
x (6x-3x)ну наверное так
(16 - 4x)/7 = 1/35
35( 16 - 4x) = 7
5 (16 - 4x) = 1
80 - 20x = 1
- 20x = - 79
x = 3,95
(-3)×(-3)+2×(-3)+4 1×(-3)×(-3) 9+(-6)+4 9 7 9 1 9 9
------------------------- × -------------------- = ------------- × ----- = --- × ----- = --- × --- = ----
1-(-3) (-3)×(-3)×(-3)-8 4 35 4 35 4 5 20