angeldevil1999 angeldevil1999
  • 20-12-2014
  • Mathematics
contestada

3b I don't get I know the answer is x=-2 and y=-3 I just can't get it

3b I dont get I know the answer is x2 and y3 I just cant get it class=

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konrad509
konrad509 konrad509
  • 20-12-2014
[tex]x+5y=-17\\ 3x-4y=6\\\\ x=-17-5y\\ 3x-4y=6\\\\ 3(-17-5y)-4y=6\\ -51-15y-4y=6\\ -19y=57\\ y=-3\\\\ x+5\cdot(-3)=-17\\ x-15=-17\\ x=-2 [/tex]
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