Ask Experts Questions for FREE Help !
Ask
    cortneybraning's Avatar
    cortneybraning Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 8, 2009, 06:59 PM
    can someone solve this using elimination?
    -10x - 3y = -18
    -7x - 8y = 11
    rwinterton's Avatar
    rwinterton Posts: 289, Reputation: 15
    Full Member
    		  
    #2

    Feb 10, 2009, 06:57 AM

    1. Multiply the top equation by 7 (where did I get the 7?)
    2. Multiply the bottom equation by 10 (where did I get the 10?)
    3. Add the equations together. Add the left sides and the right sides separately.
    4. Solve the resulting equation for y.
    5. Take the value for y and insert it into either of the equations and solve for x.

    viola!
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Solve using elimination [ 4 Answers ]

How do u slove this equation using elimination? 1/2x + 1/3y = 5/6 1/2y + 3/4x = 5/4

Solve by elimination [ 5 Answers ]

:confused: How Do you solve this? x + 2y = 7 3x - 2y = -3

Algebra: solve by elimination [ 3 Answers ]

I don't know what to get rid of! -2x+3y=14 x-4y=-12 Help me!

Solve using elimination [ 1 Answers ]

solve the system using elmination 6x+3y=-12 6x+2y=-4 how do I do this?

View more questions Search