Ask Experts Questions for FREE Help !
Ask
    GossipGirl10701's Avatar
    GossipGirl10701 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 4, 2008, 04:28 PM
    How do you solve by elimations?
    x+2y=7
    3x-2y=-3
    albear's Avatar
    albear Posts: 1,594, Reputation: 222
    Ultra Member
    		  
    #2

    Sep 4, 2008, 04:44 PM
    you elimin ate one of the variables, e.g. in this case id go with getting rid of the y
    take the first line as equation 1 and the second line as 2
    (1)= (x+2y=7)
    (2)= (3x-2y=-3)
    add them to geather
    i.e (1)+(2) this makes the y's cancel each other out
    so that you get

    4x=4

    then its easy :)
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 [(86400*n^2)/2^n]<1 solve n [ 3 Answers ]

Could you Please solve this problem <1 solve n

Can you solve this for me? [ 3 Answers ]

what is 2x+4y=12 x+y=2 :)

Pre cal solve [ 1 Answers ]

x^2 - 2x - 1 = 0 (x? ) (x? )

How do I solve this? [ 1 Answers ]

A hospital has an operating room used only for eye surgery. The annual cost of heat, rent, and electricity for the operating room and its equipment is $190,000 and the annual salaries for the people who staff this room total $265,000. Each surgery performed requires the use of $390 worth of medical...

Solve for z 3x(y+1)=9+z where y=4, x=2 [ 2 Answers ]

Solve for z 3x(y+1)=9+z where y=4, x=2 Can you help me solve step by step

View more questions Search