Решите уравнения : а) 9х = 63 б) 4х=-20 в) 5х = 0 г) 0*х = 3

а)9х=63

х=7

Б)4х=-20
х=-5
В)5х=0

х=о
Г)0*х=3
х=0 

9х=63                              4*-5=-20                     5*0=0                                  0*х=3

х=7                                   х=-5                              х=0                                      решения нет

9*7=63