Question

数学脱式计算 （11/12-5/6）×1/3÷5/9 7/15-1/8-1/8+8/15

Answer 1

（11/12-5/6）×1/3÷5/9
=1/12×1/3×9/5
=1/36×9/5
=1/20
7/15-1/8-1/8+8/15
=(7/15+8/15)-(1/8+1/8)
=1-1/4
=3/4