1
Question
What should be added to 16 to get (−31)?
(a) 15
(b) −15
(c) 47
(d) −47
(a) 15
(b) −15
(c) 47
(d) −47
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Solution
(d) −47
Let the number to be added to 16 be x.
x + 16 = (−31)
=> x = (−31)−16
=> x = −47
Let the number to be added to 16 be x.
x + 16 = (−31)
=> x = (−31)−16
=> x = −47
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