(1+1/16+1/17+1/18)*(1/16+1/17+1/18+1/19)-(1+1/16+1/17+1/18+1
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/10/03 17:20:57
(1+1/16+1/17+1/18)*(1/16+1/17+1/18+1/19)-(1+1/16+1/17+1/18+1/19)*(1/16+1/17+1/18)简便运算
原式=(1+1/16+1/17+1/18)(1/16+1/17+1/18)+(1+1/16+1/17+1/18)×1/19
-(1+1/16+1/17+1/18)(1/16+1/17+1/18)-1/19×(1/16+1/17+1/18)
=(1+1/16+1/17+1/18)×1/19-1/19×(1/16+1/17+1/18)
=1/19+(1/16+1/17+1/18)×1/19-1/19×(1/16+1/17+1/18)
=1/19
-(1+1/16+1/17+1/18)(1/16+1/17+1/18)-1/19×(1/16+1/17+1/18)
=(1+1/16+1/17+1/18)×1/19-1/19×(1/16+1/17+1/18)
=1/19+(1/16+1/17+1/18)×1/19-1/19×(1/16+1/17+1/18)
=1/19
(1+1/16+1/17+1/18)x(1/16+1/17+1/18+1/19)-(1+1/16+1/17+1/18+1
(1+1/16+1/17+1/18)×(1/16+1/17+1/18+1/19)-(1+1/16+1/17+1/18+1
(1+1/16+1/17+1/18)*(1/16+1/17+1/18+1/19)-(1+1/16+1/17+1/18+1
(1+16分之1+17分之1+18分之1)*(16分之1+17分之1+18分之1+19分之1)-(1+16分之1+17
(1+16分之1+17分之1+18分之1)×(16分之1+17分之1+18分之1+19分之1)-(1+16分之1+17分
(86+1/16*)*16/17-(37+1/17)*17/18+(58+1/18)*18/19
(1加1/16加1/17加1/18)×(1/16加1/17加1/18加1/19)-(1加1/16加1/17加1/18加1
15/1+16/1+17/1+18/1+19/1=?
(1-12)(1-13)(1-14)(1-15)(1-16)(1-17)(1-18)(1-19)0.1+0.2+0.3+
1/14*15+1/15*16+1/16*17+1/17*18
1/16*17+1/17*18+1/18*19+1/19*20=?请写一下解答技巧,谢谢!!
(25/18+16/19)*1/8+17/19