How can 1/3x – 2 = y and 1/4x + 11 = y be set up as a system of equations?
3y – x = –6
4y – x = 44
3y + x = –6
4y + x = 44
3y – 3x = –6
4y – 4x = 44
3y + 3x = –6
4y + 4x = 44
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OpenStudy (mmend98):
@ganeshie8
OpenStudy (mmend98):
@Michele_Laino
OpenStudy (anonymous):
convert them both to standard form.
OpenStudy (michele_laino):
for example, your first equation can be rewritten as follows:
\[\frac{x}{3} - 2 = y \to x - 6 = 3y\]
where I have multiplied both sides by 3
OpenStudy (mmend98):
and thats all? @Michele_Laino @dirtydishr4g
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OpenStudy (michele_laino):
yes!
Please multiply the both sides of your second equation by 4, what do you get?
OpenStudy (michele_laino):
Hint:
you should get this:
\[\frac{x}{4} + 11 = y \to x + 44 = 4y\]
OpenStudy (mmend98):
I get x+44=4y
OpenStudy (mmend98):
@Michele_Laino
OpenStudy (michele_laino):
that's right!
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OpenStudy (michele_laino):
now, if I subtract x, I get:
\[x + 44 - x = 4y - x\]
please simplify
OpenStudy (mmend98):
4y-x=44? @Michele_Laino
OpenStudy (michele_laino):
that's right!
OpenStudy (michele_laino):
now I do the same with your first equation:
\[x - 6 - x = 3y - x\]
please simplify
OpenStudy (mmend98):
So the answer would be A? 3y – x = –6
4y – x = 44
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