13,6-45:3(целых)6/13+1(целая)3/8
13,6-45:3 6/13+1 3/8= =13,6-45*13/45+1 3/8= 13,6-13+1 3/8= =6/10+1 3/8= =24/40+1 15/40=1 39/40