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08-01-2018
Mathematics

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Find the value of two numbers if their sum is 39 and their difference is 11

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anonymous79 anonymous79

08-01-2018

let the two numbers be x and y
x + y = 39
x - y = 11
so from first equation,
x=39-y
so
39-y-y=11
2y=28
y=14
x=25

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