Hi Roseland,
11x+10/2x-1-(7x+12)/2x-1
=(11x+10-7x-12)/(2x-1)
=(4x-2)/(2x-1)
=2(2x-1)/(2x-1)
=2

Roseland W.
asked 03/13/14
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Steve S.
03/15/14