The sum of two integers is -16. If one of them is 53, find the other.
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Solution
By assuming Closure property of addition [a+b=c], Let, a=53,assumeb=x,c=−16 =53+x=−16 =x=−16−53 ( By sending 53 from left hand side to the right hand side, it changes to -53) =x=−69 By the calculation we got another integer is −69