The sum of two rational numbers -3/5. The one of the number is -9/20 .Find the other
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let a and b be two rational numbers.
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Let the other number be 'x'
x + (-9/20) = - 3/5
x - 9/20 = - 3/5 ( Transpose 9/20 to R. H. S)
x = - 3/5 + 9/20. ( Now we have to make the denominators same)
L.C.M of 5 & 20 is 20
-3/5 * 4/4 =-12/20
x = - 12/20 + 9/20
x = (-12 + 9)/20 = - 3/20
So the other number is - 3/20
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x + (-9/20) = - 3/5
x - 9/20 = - 3/5 ( Transpose 9/20 to R. H. S)
x = - 3/5 + 9/20. ( Now we have to make the denominators same)
L.C.M of 5 & 20 is 20
-3/5 * 4/4 =-12/20
x = - 12/20 + 9/20
x = (-12 + 9)/20 = - 3/20
So the other number is - 3/20
Please mark as brainliest if it is helpful
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