Question

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Answer 1

`(3 2/5 - 1,6)-(1/3+3,4 + 1 2/5)`

`=  3 2/5 - 8/5 - 1/3 - 17/5-1 2/5`

`=17/5-8/5-1/3 -17/5 - 7/5`

`=(17/5-17/5)+(-8/5-7/5)-1/3`

`=0-3-1/3`

`=-3-1/3`

`=-9/3-1/3`

`=-10/3`

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`4/15 . (-11)/12 - 4/15 . 25/12`

`=-4/15 . 11/12-4/15 . 25/12`

`=-4/15 . (11/12 +25/12)`

`=-4/15 . 36/12`

`=-4/15 .3`

`=-4/5`

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`1-13/9 : 8/19 +(-11)/9 : 8/19`

`=1-13/9 . 19/8 +(-11)/9 . 19/8`

`=1- 19/8 . (-13/9 -11/9)`

`=1 - 19/8 . (-24)/9`

`=1 - 19/8 . (-8)/3`

`=1-19/3`

`=3/3-19/3`

`=16/3`

Answer 2

9: \(=3.4-1.6-\dfrac{1}{3}-3.4-1.4=-\dfrac{1}{3}-3=-\dfrac{10}{3}\)

10: \(=\dfrac{4}{15}\left(-\dfrac{11}{12}-\dfrac{25}{12}\right)=\dfrac{4}{15}\cdot\left(-3\right)=-\dfrac{4}{5}\)