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OpenStudy (anonymous):
Solve the system x=7y-4 y=7x+4 for X
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OpenStudy (dumbcow):
substitution: x = 7(7x+4) -4
OpenStudy (anonymous):
2/3
OpenStudy (dumbcow):
just giving a number answer doesn't help them...you could have just made it up try to show some steps for their sake
OpenStudy (dumbcow):
in fact x = 49x+28 -4 -48x = 24 x = -1/2
OpenStudy (dumbcow):
do you need to solve for y as well?
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OpenStudy (anonymous):
Nope, thank you! (:
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