(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