Will R. answered • 04/01/17

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When we write out the system of equations, we will get:

x+y=18

x-y=8

We can then use elimination to get just one variable.

x+y=18

+x-y= 8

Which gives us: 2x=26

We then divide by 2 and get: x=13

We next plug that into one of the two equations and solve for the other variable: (13)+y=18

We subtract 13 from both sides and get: y=5

So the two numbers are 13 and 5.