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OpenStudy (anonymous):
TWO-COLUMN PROOF What belongs in the box marked with the question mark in the proof?Given: 3x - 4 = 2(x + 8), Prove: x = 20 http://prntscr.com/cokxc
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OpenStudy (anonymous):
@nbouscal Can you help?
OpenStudy (anonymous):
I have no idea what it is guys):
OpenStudy (anonymous):
@aroub Do you have any idea?
OpenStudy (aroub):
Hey!
OpenStudy (aroub):
The reason is given.. =)
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