Question

6+2.6÷7点八的商再减去八分之七是多少？

Answer 1

6+2.6÷7.8—7/8
=6+1/3—7/8
=19/3-7/8
=152/24—21/24
=131/24

Answer 2

6+(2.6÷7.8－7/8)
=6+(13/39－7/8)
=6+(104/312－276/312)
=6－172/312
=6－43/78
=5又35/78