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(2)/(-5) xx(-5)/(2)=...

`(2)/(-5) xx(-5)/(2)=`

A

1

B

-1

C

2

D

-5

Text Solution

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The correct Answer is:
A
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Using appropriate properties find : (2)/(5) xx ((-3)/(7)) - (1)/(6) xx (3)/(2) + (1)/(14) xx (2)/(5) = (2)/(5) xx ((-3)/(7)) + (1)/(14) xx (2)/(5) - (1)/(cancel6) xx (cancel 3)/(2) = (2)/(5) xx ((-3)/(7) + (1)/(14) ) - (1)/(4) = (2)/(5) xx ((-6+1)/(14))- (1)/(4) = (cancel 2)/(cancel 5) xx (-cancel 5)/(cancel14) - (1)/(4) = (-1)/(7) - (1)/(4) (- 4 - 7)/(28) = (-11)/(28)

The value of { (2)/(5) - ((-3)/(5)) } xx {-(1)/(2) -:(-(1)/(2))} is

Using appropriate properties find : (2)/(3) xx (3)/(5) + (5)/(2) - (3)/(5) xx(1)/(6)

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