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    what is the solution to 2x=3-y, 2y=12-x?

    0  Views: 837 Answers: 2 Posted: 13 years ago
    Tags: algebra 1

    2 Answers

    I guess by now you know how to do these!


    Substitution Method


    2x = 3 - y


    Move negative y to the left side and change it to positive y. Then move positive 2x to the right side and change it to negative 2x.


    y = -2x + 3


    Now, put the value of y in the next equation.


     2(-2x + 3) = 12 - x


    -4x + 6 = 12 -x


    +x   -6     -6  +x    


    -3x       =    6   


      -3            -3


    x = -2


    Now, solve for y. Put the x value in either equation.


    y = -2x + 3  >  you can use this equation or the original equations.


    y = -2(-2) + 3


    y = 4 + 3


    y = 7


    Solution:


    (-2,7) 

    Try Homework help: http://www.mathwarehouse.com/ask/questions  I discourage doing your homework for you. 



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