Question

)By what rational number should "-8/7" is added to get "-4."

Answer 1

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What rational number should be added to −5/11 to get −7/8.

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Solution

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Given

According to the statement,

Sum of two numbers =−7/8

One number =−5/11

Hence, the other number is calculated as below:

Other number =−7/8−(−5/11)

=−7/8+5/11

Taking L.C.M. we get,

=(−77+40)/88

=−37/88

Therefore, the other number is −37/88.