4个题急急急十万火急求大神帮忙
1个回答
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1.
=11/4÷[2/3-11/10*5/9]
=11/4÷[2/3-11/18]
=11/4÷[12/18-11/18]
=11/4÷1/18
=11/4*18
=99/2
2.
=91*1/13-100/13+9/13
=1/13*(91-100+9)
=1/13*0
=0
3.
=9/10÷[1/2*(6/10-1/10)]
=9/10÷[1/2*5/10]
=9/10÷1/4
=9/10*4
=18/5
4.
=3.14*4.3+7.2*3.14-10.5*3.14
=3.14*(4.3+7.2-10.5)
=3.14*1
=3.14
希望能帮到你, 望采纳. 祝学习进步
=11/4÷[2/3-11/10*5/9]
=11/4÷[2/3-11/18]
=11/4÷[12/18-11/18]
=11/4÷1/18
=11/4*18
=99/2
2.
=91*1/13-100/13+9/13
=1/13*(91-100+9)
=1/13*0
=0
3.
=9/10÷[1/2*(6/10-1/10)]
=9/10÷[1/2*5/10]
=9/10÷1/4
=9/10*4
=18/5
4.
=3.14*4.3+7.2*3.14-10.5*3.14
=3.14*(4.3+7.2-10.5)
=3.14*1
=3.14
希望能帮到你, 望采纳. 祝学习进步
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