(54-х)*7=45. (х+8)÷6=41-5

1. (54-x)*7=45
54-x=45/7
x=54-45/7
x=(378-45)/7
x=333/7
x= 47 4/7

2. (x+8):6=41-5
(x+8):6=36
(x+8)=36*6
x=216-8
x=208