Решите уравнение 1,8-(2 3/5 -(x-1,2))=3

1,9-(5 3/4-(x+1))=3,15

1,8-(2 3/5 -(x-1,2))=31,8-(2,6-x+1,2)=31,8-(3,8-x)=31,8-3,8+x=3-2+x=3x=3+2x=51,9-(5 3/4-(x+1))=3,151,9-(5,75-x-1)=3,151,9-(4,75-x)=3,151,9-4,75+x=3,15-2,85+x=3,15x=3,15+2,85x=6