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Inverse of Rational Numbers

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Question

Dear sir/Ma'am
I have a problem in this question
Q. Find a number which is 1 more than its additive inverse?

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Solution

let the number being x then additive inverse is -x
now x is 1 more than its additive inverse that is -x
therfore x=-x+1
x+x=1
2x=1
x=1/2

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