Ask Experts Questions for FREE Help !
Ask
    guerita2007's Avatar
    guerita2007 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 4, 2007, 05:27 PM
    Substitution or Elimination
    y=-2x-3
    4x+3y=3

    someone help me with my homework!!
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
    		  
    #2

    Sep 4, 2007, 11:43 PM
    1) y=-2x-3
    2) 4x+3y=3

    multiplying 1) by 2 we get:

    3) 2y=-4x-6

    rearranging:

    4) 2y+4x=-6

    If you subtract 4) from 2) you should get an equation containing only y. The rest should be trivial.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search


Check out some similar questions!

Algebra Ii (elimination & Substitution) [ 8 Answers ]

solve by elemination {x + y = 10 x - y = 2 solve by substitution y = x +1 2x + y = 7

Substitution method [ 2 Answers ]

I need to solve for x and y x+y=4 y+-x=3

Algebra substitution [ 1 Answers ]

Substitution 9x-2y=3 3x-6=y

Substitution with a fraction [ 3 Answers ]

y = -x/2 2x - 3y = -7 I have reached this point: 2x - 3(-x/2) = -7 Can someone help me? Thanks!

Substitution [ 2 Answers ]

What is substitution?

View more questions Search