a)3/x-2 +7/2-x +2x/x-2b) x-2/x -x+2/x-2 +12-17/4-4xc)x+4/x-4 -x-4/x+4 +10x+24/14-x^x+1/x-3 -1-x/x+3 -2x (1-x)/9-c^
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