02-06-2016
Mathematics

contestada

the sum of two numbers is 26 and their difference is 20.find each of the numbers.

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emmak21 emmak21

02-06-2016

23 and 3
23 + 3 = 26 and 23 - 3 = 20

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03-06-2016

(1) x+y= 26
(2 ) x-y= 20 from here we can find : x= 20+y
We replace the ''x'' we found from (2) to the (1)
20+y+y=26
2y= 26-20
2y=6
y=3
x= 20+y = 23
Prove: 23+3 = 26 and 23-3 = 20

Answer Link

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