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2006-12-31 04:19:39 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help
y=7x
2x-y=-10
so subtitute y with 7x and you have:
2x-7x=-10
-5x=-10
x= -10/-5
x=2
then
just subtitute 2 into x in the equation:
y=7x
y=7(2)
so y=14
2006-12-31 06:18:19 · answer #1 · answered by rebel_chick 2 · 0⤊ 0⤋
er... if this is what you are trying to say... - that there are two seperate equations...
y = 7x
2x - y = -10
You would set all the y's in the second equation to 7x and solve the equation for x...
so...
2x - 7x = -10
-5x = -10
x = 2
So if x = 2 -------then going back to the first original equation... y = 7x you would then substitute in 2 for x
y = 7 (2)
y = 14
So your answer would be x = 2 and y = 14
I hope I answered your question - I didnt really understand what you were asking...
2006-12-31 04:47:24 · answer #2 · answered by Jenny 3 · 1⤊ 0⤋
you already have the answer in the question
2006-12-31 06:31:49 · answer #3 · answered by chat all you want 3 · 0⤊ 0⤋
What exactly do you want us to do I don't think this is valid??
2006-12-31 04:28:11 · answer #4 · answered by Anonymous · 0⤊ 0⤋