curtisforreal1 curtisforreal1

13-10-2017
Mathematics

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the sum of two numbers is 18 . the difference of the two numbers is -2 find the numbers

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helenhong helenhong

13-10-2017

a and b is a numbers
a + b = 18
a - b = -2

2a = 16
a = 8

8 + b = 18
b = 10

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