Post a New Question

math

posted by .

solve the following system of equations

8x+9y= -19

-3x+7y= -24

x=
y=

  • math -

    You want to cancel one variable

    Let's cancel the x's. 8 and 3 have a LCM, which is 24

    3(8x + 9y= -19)= 24x + 27y= -57
    8(-3x + 7y= -24)= -24x + 56y = -192
    -------------------------------------
    0 + 83y= -249
    83y= -249
    y= -3

    Plug into the first equation to figure out what x is now.

    8x + 9(-3)= -19
    8x - 27= -19
    8x= 8
    x= 1

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question