Mathematics
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current location:Mathematical operation > History of Mathematical Computation
    (20+(18-15.45)×17.3+(15.45-8)×17.9)×0.84-2×6.7×√0.84
    (20+(18-15.45)×17.3)×0.84-2×5×√0.84
    (20+(18-18)×17.3)×0.81-2×5×√0.81
    (20+(18-15.45)×17.3)×0.81-2×5×√0.81
    14/3/14
    50/121除9/121/121
    50/121除10
    50/121/10
    1.875+0.85
    0.25+0.6
    0.25+2/3
    1.875-(0.25+2/3)
    5/7+1/4-9/14
    2减5/9
    2-9/5
    7/15+(8/15-1/5)
    (5/7加7/11)加2/7
    5/7+7/11+7/2
    5/7加7/11加2/7
    5/7+7/11+2/7

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