SOLUTION: what is a system equation when the sum is 14 and the difference is 4

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Question 933025: what is a system equation when
the sum is 14 and the difference is 4
Answer by MathLover1(20855) About Me  (Show Source):
You can put this solution on YOUR website!

the sum is 14:
x%2By=14.....eq.1
and the difference is 4:
x-y=4.....eq.2
system is:
x%2By=14.....eq.1
x-y=4.....eq.2
_____________________ to solve, add eq.1 and eq.2
x%2Bcross%28y%29%2Bx-cross%28y%29=14%2B4
2x=18
x=9
go to x%2By=14.....eq.1 substitute 9 for x and solve for y
9%2By=14
y=14-9
y=5