Question

Answer 1

`A=[-7]/813+496.([-7]/813)+([-7]/813).316`

`A=[-7]/813.(1+496+316)`

`A=[-7]/813 . 813=-7`

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`B=[-9]/10 . 5/14+1/10.([-9]/2)+1/7 .([-9]/10)`

`B=[-9]/10 . 5/14+1/2.([-9]/10)+1/7 .([-9]/10)`

`B=[-9]/10 .(5/14+1/2+1/7)`

`B=[-9]/10 .1=[-9]/10`

Answer 2

A = \(\dfrac{-7}{813}.\left(1+496+316\right)=\dfrac{-7}{813}.813=-7\)

B = \(\dfrac{-9}{10}.\dfrac{5}{14}+\left(\dfrac{-9}{10}\right).\dfrac{1}{2}+\dfrac{1}{7}.\left(\dfrac{-9}{10}\right)\)

= \(\dfrac{-9}{10}.\left(\dfrac{5}{14}+\dfrac{1}{2}+\dfrac{1}{7}\right)=\dfrac{-9}{10}.1=\dfrac{-9}{10}\)