3/4X5/9X3/10=3/5÷6X10/7=8/9+4/5-8/9=7/12÷7÷5/6=1-1/6-5/6=1/6+3/4+1/3=1÷1/2+0.2=36X5/8-5/8X4=3/13X25+3/13=