Question

How to solve these problems

Answer 1

`((14)/(7)\cdot \:3+9)/(9\left((18)/(6)/ (21)/(3)\right))`

`(14)/(7) =2\\=2\cdot \:3+9`

`=6+9`

`=15`

`9\left((18)/(6)/ (21)/(3)\right)`

`(18)/(6) =3`

`(21)/(3) =7`

`9(3/ 7)=(3)/(7)`

`=9\cdot (3)/(7)=(27)/(7)`

`(27)/(7) =3(6)/(7)`

`=(15)/(3(6)/(7))`

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`(31)/(\:7)+(28)/(13)`

`LCM\: of \: 7 \:and \: 13 :91`

`=(403)/(91)+(196)/(91)`

`=(403+196)/(91)`

`=(599)/(91)`

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`-3-21\cdot (66)/(22)`

`(66)/(22) =3`

`=-3-21\cdot \:3`

`21\cdot \:3=63`

`=-3-63`

`=-66`

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