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OpenStudy (anonymous):
|4u+9|=|4u+7|
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OpenStudy (anonymous):
i got -2, can you help me with my most recent one? :) please im so confused....
OpenStudy (anonymous):
solve \[4u+9=4u +7\] which clearly has no solution and then solve \[4u+9=-4u-7\] \[8u+9=-7\] \[8u=-16\] \[u=-2\] is the only solution
OpenStudy (anonymous):
oh so you have it. good. what is the next one?
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