2006-12-10 13:32:54 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help
-4x-7y=-1 -3.5(-11x-2y)=(-1)-3.5
38.5x+7y=3.5
-4x-7y=-1
34.5x=2.5
x=13.8
-4(13.8)-7y=-1
-55.2-7y=-1
2006-12-10 13:43:12 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Multiply the second equation by four so that the x-values will add up to zero. Then add the two equations together.
-4x-7y=-11
+4x-8y=-4
Add Them To Get:
-15y=-15
Divide both by -15 to get:
y=1
Place it in the second equation to get:
x-2(1)=-1 or
x-2=-1 Then add 2 to both sides to get:
x=1 Your solution is (1,1).
Have a great holiday!
Eds
2006-12-10 13:43:52 · answer #2 · answered by Eds 7 · 1⤊ 0⤋
Tracey L It's your news?
http://www.osoq.com/funstuff/extra/extra04.asp?strName=Tracey_L
2006-12-10 13:44:34 · answer #3 · answered by adb e 1 · 0⤊ 0⤋
-11x-9y=1
2006-12-10 13:35:58 · answer #4 · answered by dragon88780 1 · 0⤊ 0⤋