2x-y = 8 ..........(1)
x + 3y
= 9 ...........(2)
We will use the elimination method to
solve:
Let us multiply (1) by 3 and add to
(2);
==> 7x =
33
==> x=
33/7
To find y we will substitute in
(1):
2x - y = 8
==> y=
2x - 8 = 2(33/7) - 8
=(66-56)/7 =
10/7
==> y= 10/7
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