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OpenStudy (anonymous):
|3a+4| = |4a-8|
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OpenStudy (anonymous):
12 or 12/7
OpenStudy (anonymous):
3a+4=4a-8, a=12 or 3a+4 =-(4a-8), 7a=12, a 12/7
hartnn (hartnn):
3a+4 =-(4a-8) gives a= 4/7
OpenStudy (anonymous):
now that I understand the method, I got 12 or 4/7
OpenStudy (anonymous):
thank you both
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