The sum of two numbers is 28 and their difference is 4 what are the numbers?

asked Dec 3, 2019 101k views

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a+b = 28
a-b = 4
_______ +

2×a =32 ⇒ a=32:2 ⇒ a=16
⇒ b=28-16
⇒ b=12

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