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OpenStudy (anonymous):
Solve the following system of equations x+3y=7 (1) x=9-3y (2) Solution should be an ordered pair.
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OpenStudy (bahrom7893):
no solutions..
OpenStudy (bahrom7893):
9-3y+3y = 7 9 = 7 thats false
OpenStudy (anonymous):
Grrrrrr...
OpenStudy (anonymous):
Well that's better, but still.
OpenStudy (anonymous):
So you put the two equations together?
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OpenStudy (bahrom7893):
yea.. substitute for x in the 1st eqn..
OpenStudy (anonymous):
You can alternatively add the equations.. x + 3y = 7 + -3y + 9 = x ============ x + 9 = 7 + x So we have: x + 9 = x + 7 Which is impossible.
OpenStudy (anonymous):
ahhhh that makes sense
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