SOLUTION: how do you solve a system of linear equations (using the addition/elimination method) if there is no lcd?

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Question 808629: how do you solve a system of linear equations (using the addition/elimination method) if there is no lcd?
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!

There is ALWAYS a least common multiple. (lowest common denominator is an inappropriate term in this context)

Eq. 1

Eq. 2

Multiply Eq. 1 by and Eq. 2 by





Then when you add the two equations you get:



which is a single variable linear equation in . Alternatively, you could use and as your multipliers so as to end up with a single variable linear equation in , if that's what makes your socks roll up and down.

John

Egw to Beta kai to Sigma
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