SOLUTION: Please help me solver this, I have a really hard time understanding it. My teacher calls it elimination. x-5y=5 + 2x+10y=6. Thank you.
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-> SOLUTION: Please help me solver this, I have a really hard time understanding it. My teacher calls it elimination. x-5y=5 + 2x+10y=6. Thank you.
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Question 436053: Please help me solver this, I have a really hard time understanding it. My teacher calls it elimination. x-5y=5 + 2x+10y=6. Thank you. Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! It looks like you have 2 equations. A general rule about
equations is:
If you want to find the values of the unknowns,
the number of equations has to equal the number
of unknowns.
You have 2 equations and 2 unknowns, so you
know you can solve for and . You just have to
decide what method to use.
Elimination means that you get the equations into a
form where you can add or subtract them and eliminate
one of the unknowns.
(1)
(2)
The easiest path here is to divide both sides of (2) by
(2)
Now you can just add (1) and (2)
(1)
(2)
Now put this result back into either (1) or (2)
(2)
(2)
Subtract from both sides
(2)
---------------
Just plug the answers back into (1) and (2) to check
(1)
(1)
OK
