andryCels1ea7nushadl andryCels1ea7nushadl

01-12-2016
Mathematics

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What has the sum of 20 but the difference is 8?

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Nasornisbeautiful Nasornisbeautiful

01-12-2016

x + y = 20---- 1
x - y = 8----- 2

From 1+2
2x = 28
x = 14
Substitute x in eq.2
14 -y = 8
y = 6

Ans : x= 14 , y= 6

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