（-3.14）x5.597+(3.14)x(-5.597)=_______.(-1/2+2/3-1/4)x(-24)=_

ddzaina2022-10-04 11:39:542条回答

（-3.14）x5.597+(3.14)x(-5.597)=_______.(-1/2+2/3-1/4)x(-24)=_______.99 12/13x(-13)=_______.
最后一个是99又十三分之十二,别看错了.

已提交，审核后显示！提交回复

bzxwy 共回答了19个问题 | 采纳率89.5%: （-3.14）x5.597+(3.14)x(-5.597)
抄错了吧
(-1/2+2/3-1/4)x(-24)
=1/2x24-2/3x24+1/4x24
=12-16+6
=2
99 12/13x(-13)
=(100-1/13)x(-13)
=-100x13+1/13x13
=-1300+1
=-1299; 1年前