(10+5/6)x4/5=10×4/5+5/6×4/5=8+2/3=26/31/5+2/7÷3/14=1/5+2/7×14/3=1/5+4/3=23/151/56÷(3/14÷6/13)=1/56÷3/14×6/13=1/56×14/3×6/13=1/12×6/13=1/26