SOLUTION: I cannot seem to figure this one out, I've figure all 5 problems before hand on my assignment but can't seem to get this one, and it looks so simple, can anyone help 18X + Y = 4

Question 157338: I cannot seem to figure this one out, I've figure all 5 problems before hand on my assignment but can't seem to get this one, and it looks so simple, can anyone help
18X + Y = 42, 6X - 3Y = -6
Answer by jojo14344(1513) (Show Source): You can put this solution on YOUR website!
---------> eqn 1, -----------> eqn 2
In eqn 1 we get,
----------> eqn 3
Susbtitute eqn 3 in eqn 2:

, combine similar terms

---->

For go back eqn 3:

In doubt? go back eqn 1:

Also via eqn 2:

Thank you,
Jojo

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