marleneperalta3 marleneperalta3

07-01-2015
Mathematics

Answered

The sum of two numbers is 34. Their difference is 18. What are the two numbers?

Answer :

07-01-2015

[tex] \left \{ {{x+y=34} \atop {x-y=18}} \right. \\+----\\\\2x=52\ \ \ \ \ |:2\\x=26\\\\26+y=34\\y=34-26\\y=8\\\\ \left \{ {{y=8} \atop {x=26}} \right. [/tex]

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