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01-10-2016
Mathematics

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the sum of two numbers is 18 and their difference is 4

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texaschic101 texaschic101

01-10-2016

a + b = 18
a - b = 4
-------------add
2a = 22
a = 22/2
a = 11

a + b = 18
11 + b = 18
b = 18 - 11
b = 7

ur 2 numbers are 7 and 11

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