Find the sum (a) −8/11 + 7/10
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this is the answer = -3/110
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Take the LCM as 110
Multiply 10 by 11 , 11 by 10 to get 110
=10 × 11 = 110 , 11 × 10 = 110
When denominator gets multiplied then numerator also gets multiplied by the same number as the denominator
= 7 × 11 = 77 , 8 × 10 = 80
Now minus and plus = minus, so subtract them
-80/110 + 77/110 = -3/110 ans
Note : Sign of the bigger number(-80/110)
Hope it helps
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