5.17 5/7*1/6+4/17*5/9+5/18*6/17等于多少？（用简算方法）要过程

5/7*1/6+4/17*5/9+5/18*6/17等于多少？（用简算方法）要过程  

5/7*1/6+4/17*5/9+5/18*6/17等于多少？（用简算方法）要过程

5/7应为5/17
5/17*1/6+4/17*5/9+5/18*6/17
=5/17*1/6+5/17*4/9+6/18*5/17
=5/17*(1/6+4/9+1/3)
=5/17*17/18
=5/18

怎样简便计算 5/17*1/6+4/17*5/9+5/18*7/17

4/17*5/9=5/17*4/9
5/18*7/17=5/17*7/18
5/17*1/6+4/17*5/9+5/18*7/17
=5/17*1/6+5/17*4/9+5/17*7/18
提出5/17
=5/17*(1/6+4/9+7/18)
=5/17*1
=5/17

1/17*5/6+5/9*4/17+5/18*6/17=?要过程

1/17*5/6+5/9*4/17+5/18*6/17
=5/17*1/6+5/17*4/9+5/17*6/18
=5/17*(1/6+4/9+6/18)
=5/17*(3/18+8/18+6/18)
=5/17*17/18
=5/18

5/17×1/6+4/17×5/19+5/18×7/17

解：
原式
=1/17×5×1/6+1/17×4×5/19+1/17×7×5/18
=5/17×1/6+5/17×4/19+5/17×7/18
=5/17×(1/6+4/19+7/18)
=5/17(3/18+7/18+4/19)
=5/17(10/18+4/19)
=5/17(5/9+4/19)
=5/17×131/171
=655/2907
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巧算5/17*1/6+5/18*6/17+4/17*5/9

5/17*1/6+5/18*6/17+4/17*5/9
=5/17*1/6+5/17*6/18+5/17*4/9
=5/17*(1/6+1/3+4/9)
=5/17*(3/18+6/18+8/18)
=5/17*17/18
=5/18
即5/18
声明：不是抄上面的

5/17x1/6+4/17X5/9+5/18X6/17

5/17x1/6+4/17X5/9+5/18X6/17
=5/17x1/6+5/17X4/9+6/18X5/17
=5/17x3/18+5/17X8/18+6/18X5/17
=5/17x(3/18+8/18+6/18)
=5/17x17/18
=5/18

6/ 17十1/7十5/7等于多少

6/ 17十1/7十5/7
＝6/ 17十（1/7十5/7）
＝6/ 17十1
＝1又6/17

5/4×（-6/5）×（-1/9）等于多少？

5/4×（-6/5）×（-1/9）
=5/4×（-6/5）×（-1/9）
=1/6

1/4*32*5/6*4/7简算方法

1/4*32*5/6*4/7简算方法
=1/4*4*8*5/6*4/7
=8*5/6*4/7
=8*5/3*2/7
=（8*5*2）/（3*7）
=80/21
=3+17/21
三又二十一分之十七

简便运算要过程1/4+5/8÷5/6=？ 10/7×0.4÷3/2=? 5/12×6/5+4/5×5/12=?

1/4+5/8÷5/6
=1/4+5/8×6/5
=1/4+6/8
=1/4+3/4
=1

10/7×0.4÷3/2
=10/7×4/10×3/4
=4/7×3/4
=3/7

5/12×6/5+4/5×5/12
=6/12+4/12
=10/12
5/6