Đáp án:
`2*3/7+(2/9-1 3/7)-5/3:1/9`
`=(2.3)/7+(2/9-10/7)-5/3*9`
`=6/7+2/9-10/7-(5.9)/3`
`=6/7-10/7+2/9-5.3`
`=(-4)/7+2/9-15`
`=(-36)/63+14/63-15`
`=(-22)/63-15`
`=(-22)/63-945/63`
`=(-967)/63`
`d)``(337/-231-123/89+34/791)*(1/6-1/8-1/24)`
`=(33/-231-123/89+34/791)*(1/24-1/24)`
`=(33/-231-123/89+34/791)*0`
`=0`