9又5/6*4.25+4又1/4除以6
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9又5/6*4.25+4又1/4除以6
9又5/6*4.25+4又1/4除以6
9又5/6*4.25+4又1/4除以6
原式=59/6 x17/4+17/4x1/6=17/4x(59/6+1/6)=85/2
9又5/6*4.25+4又1/4除以6
=9又5/6×4.25+4又1/4×1/6
=4.25×(9又5/6 + 1/6)
=4.25×10
=42.5