Question

`6/7:(2/5xx6/7)`

6/7 + 5/7 : 5 - 8/9

6/7 + 5/8 . 1/5 - 3/16 .4

Answer 1

a: \(=\dfrac{6}{7}:\dfrac{12}{35}=\dfrac{6}{7}\cdot\dfrac{35}{12}=\dfrac{6}{12}\cdot\dfrac{35}{7}=\dfrac{5}{2}\)

b: \(=\dfrac{6}{7}+\dfrac{1}{7}-\dfrac{8}{9}=1-\dfrac{8}{9}=\dfrac{1}{9}\)

c: \(=\dfrac{6}{7}+\dfrac{1}{8}-\dfrac{3}{4}=\dfrac{6}{7}-\dfrac{5}{8}=\dfrac{48-35}{56}=\dfrac{13}{56}\)

Answer 2

`a)`

`(105/31-31/202+104/91)xx(1/2-1/3-1/6)`

`=(105/31-31/202+104/91)xx(3/6-2/6-1/6)`

`=(105/31-31/202+104/91)xx0/6`

`=(105/31-31/202+104/91)xx0`

`=0`

`b)`

`6/7:(2/5xx6/7)`

`=6/7:2/5xx6/7`

`=(6/7:6/7):2/5`

`=1:2/5`

`=5/2`

`c)`

`6/7 + 5/7 : 5 - 8/9`

`=6/7+1/7-8/9`

`=9/9-8/9`

`=1/9`

`d)`

`6/7 + 5/8 . 1/5 - 3/16 .4`

`=6/7+1/8-3/4`

`=(48+7-12)/56`

`=13/56`

`@Nae`