Ask Experts Questions for FREE Help !
Ask
    debschu123's Avatar
    debschu123 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jun 24, 2010, 11:10 AM
    How do I solve the problem by elimination?
    solve by elimination 2x-4y=18,5x+2y=33.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #2

    Jun 24, 2010, 12:06 PM

    What have you tried so far?

    Code:
    2x - 4y = 18
5x + 2y = 33
    What you need to eliminate one of the two variables is the same coefficient (number preceding the variable) in front of one variable.

    You have 2x and 5x, so, they are different. How to make them the same? Multiply the first by 5 and the second by 2, giving 10x and 10x. Now they're the same.

    Code:
    2x - 4y = 18  => x5   => 10x - 20y = 90
5x + 2y = 33  => x2   => 10x +  4y = 66
    Do you see what I did? While multiplying, I multiplied everything by 5 and 2 respectively. Now, you can subtract one equation from the other to get only one equation with one variable.

    Try this, and I'll show you another method.
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!

How do you solve using elimination [ 1 Answers ]

How do you solve 6x-6y-4z=-10, -5x+4y-z=-12, 2x+3y-2z=9 3 variables using elimination I really need help so please help me! Thanks

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

How to solve by elimination x-4y=5 and 2x+4y=-2 [ 1 Answers ]

solve by elimination x-4y=5 and 2x+4y=-2

Solve by elimination [ 5 Answers ]

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

Can someone solve this using elimination? [ 1 Answers ]

-10x - 3y = -18 -7x - 8y = 11

View more questions Search