(1/3+1/2)*x=3,75 (3/5-0,25)*x=4,9 (7/8-0,2)*x=8,1 (4-2цел3/7)*x= 2цел5/14
2+3/6×х=3,75 5/6×х=3,75 х=3,75:5/6 х=9/2 х=4,5