−2x + 7y = 13
3x + 2y = −7

Question

−2x + 7y	 = 	13
3x + 2y	 = 	−7

anonymous · Answer

x=-3, y=1

anonymous · Answer

please show work, thanks

anonymous · Answer

Show me yours and I'll help you if you get stuck.

anonymous · Answer

I have never done a problem thats why I am asking to show work, my teacher says to look in our book but I can't find it

anonymous · Answer

What method do they ask you to use to solve it.  There are several ways to do it.

anonymous · Answer

if you want to eliminate the x-variabls through a linear combination of the two equation, you would multiply the first equation by 2 and the second equation by 3.  that would make the coefficient of the x-variables opposites

-6x + 21y =39
  6x  + 4y =-14
==========
          25y=25
              y=1

back substitute into any equation above ego get x; i choose the original equation 2

3x +2(1) = -7
3x = -9
x = -3

the solution is x=-3 and y=1, or as an ordered pair (-3, 1)