(3 1/4+2 1/6):2 3/5-2/3-2/3*4/9=1 13/108
1) 13/4+13/6=3*13/12+2*13/12= 39/12+26/12=65/12
2)65/12:2 3/5=65/12:13/5=65/12*5/13=5/12*5/1=25/12
3) 2/3*4/9=8/27
4) 25/12-2/3=25/12-4*2/12=25/12-8/12=17/12
5) 17/12-8/27=9*17/108-4*8/108=153/108-32/108=121/108= 1 13/108