5/11×1/8+6/11÷8 =5/88+6/88=11/88=1/8,
(1/4+5/7)÷1/28=(7/28+20/28)*28=27/28*28=27
5/11×1/8+6/11÷8 =5/11x1/8+6/11x1/8=1/8(5/11+6/11)=1/8
5/11×1/8+6/11÷8 =5/88+6/11x1/8=5/88+6/88=11/88=1/8
(1/4+5/7)
x:1.2= 5/6 0.3×6-3x=1.2 37.5 % -3/16x=3/8
x=1.2×5/6 3x=0.6
x=1 x=0.2