Question

реши уравнения:(8c - 1) * 5= 235     (4n + 12) : 8 = 136                                                                                                                             

Answer 1

Ну вот и все.............

Answer 2

спс)))

Answer 3

(8с-1)*5=235
30с-5=235
30с=235+5
30с=240
с=8

(4n+12):8=136
136*8=(4n+12)
1088=4n+12
4n=1076
n=269