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(-一又3/4)-(+六又1/3)-2.25+10/3
=-7/4-19/3-9/4+10/3
=-16/4-3
=-4-3
=-7
-2^2×7-(-3)×6+5
=-4*7-(-18)+5
=-28+18+5
=-5
=-7/4-19/3-9/4+10/3
=-16/4-3
=-4-3
=-7
-2^2×7-(-3)×6+5
=-4*7-(-18)+5
=-28+18+5
=-5
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