SOLUTION: solve by addition or subtraction and check result 3x+2y=23 x+y=8

Question 189432: solve by addition or subtraction and check result
3x+2y=23
x+y=8
Answer by jojo14344(1513) (Show Source): You can put this solution on YOUR website!

Given:
Multiply by 3,
x ==>

then subtract from , we get

------------------
---> , subst. in

Then, the 2 lines intersect at point (7,1)

Let's see,
---> RED=EQN1; GREEN=EQN2

Thank you,
Jojo
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