(-2)的4次方÷(-2又3分之2)눀+5又2分之1×(-6分之1)-0.25

2024-12-14 06:59:36
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回答1:

(-2)的4次方÷(-2又3分之2)²+5又2分之1×(-6分之1)-0.25
=16÷(-8/3)²-11/2×1/6-1/4
=16÷(16/9)-11/12-1/4
=16×9/16-11/12-1/4
=9-11/12-1/4
=9-11/12-3/12
=7+2-14/12
=7+2-7/6
=7+5/6
=7又5/6