45b+11+46b=39 Tolong dijawab plus cara Help me please.....

45b+46b=39-11
91b=28
b=28/91

maaf kalo salah*

45b+11+46b=39
91b+11=39
91b= -11+39
91b=28
b=28/91 = 28 : 7 =4
91 : 7 =13
jadi b= 4/13

#semoga membantu