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Michael wants to eliminate the variable y from the system below by adding. First, he will have to multiply one of the equations by a number. Which step will enable him to eliminate y by adding?
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Michael wants to eliminate the variable y from the system below by adding. First, he will have to multiply one of the equations by a number. Which step will enable him to eliminate y by adding?

Michael wants to eliminate the variable y from the system below by adding. First, he-example-1
User Ken Joyner
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1 Answer

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first, he would multiply 2x + 2y = 6 by 3.

7x - 6y = 8
2x + 2y = 6....multiply by 3
--------------
7x - 6y = 8
6x + 6y = 18 (result of multiplying by 3)
-------------add
13x = 26.......poof...the y's have been eliminated :)
x = 2


User Yuri Kots
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