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3/10+[(17/20-5/6-2/3)/(-3/2-5)ˆ2+8/13-4/5]ˆ3+[(1/7+3/4)/(-1/7+3/7)]
3/10+[(17/20-5/6-2/3)/(-3/2-5)ˆ2+8/13-4/5]ˆ3+[(1/7+3/4)/(-1/7+3/7)]
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