能简算的要简算:1、125又3⼀8x(9又2⼀4-3.72+3.25-1又7⼀25)

2、(8又5/7-1.625-3又3/8)÷1又6/7
2025-03-26 21:50:36
推荐回答(2个)
回答1:

1、125又3/8x(9又2/4-3.72+3.25-1又7/25)
=1003/8×(12+3/4-5)

=1003/8×31/4
=31093/32

第1题有没有打错数字?
1、125又3/8x(9又3/4-3.72+3.25-1又7/25) 这里是3/4
=1003/8×(13-5)

=1003/8×8
=1003

2、(8又5/7-1.625-3又3/8)÷1又6/7

=(8+5/7-5)×7/13
=26/7×7/13
=2

回答2:

能简算的要简算:
1、125又3/8x(9又2/4-3.72+3.25-1又7/25)
解,得:
==1003/8*(9.5-3.72+3.25-1.28)
==125.375[(9.5+3.25)-(3.72+1.28)]
==125.375*(12.75-5)
==125.375*7.75
==971.65625

2、(8又5/7-1.625-3又3/8)÷1又6/7
解,得:
==(8又5/7-1.625-3又3/8)*(7/13)
==(61/7)*(7/13)-[(13/8)+(27/8)]*(7/13)
==(61/13)-5*(7/13)
==(61/13)-(35/13)
==26/13
==2

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