Math, asked by 903282, 1 month ago

-11/24, when subtracted from a number, gives 23/72. Find the number.
please do working and explain... class 7

Answers

Answered by JSP2008
2

Let the number = x

-11 23

---- - x = -----

24 72

23 (-11)

x = ----- + ------

72 24

The denominators are different so we should take LCM

LCM = 72

Multiply:-

-11 3 (-33)

---- × --- = ------

24 3 72

AND

23 1 23

---- × --- = -----

72 1 72

Now let us add,

23 (-33)

x = ----- + ------ =

72 72

23 + (-33)

= --------------

72

(negative×positive=negative)

[ (-) × (+) = (-) ]

= 23 - 33 = -10 = -5

----------- ----- ----

72 72 36

Hope it helps!!!

Similar questions