计算下列各题 (能简算的要简算)
5/14-2/5+9/147/8+8/17+9/17+1/838/45-(29-1/5)3/4+(5/12-1/4)3/8+x=5/6x-(1/3-1/5)=8/15...
5/14-2/5+9/14 7/8+8/17+9/17+1/8 38/45-(29-1/5)
3/4+(5/12-1/4) 3/8+x=5/6 x-(1/3-1/5)=8/15 展开
3/4+(5/12-1/4) 3/8+x=5/6 x-(1/3-1/5)=8/15 展开
展开全部
5/14-2/5+9/14
= 1 - 2/5 = 3/5
7/8+8/17+9/17+1/8
= 2 + 1/ 17
3/4+(5/12-1/4)
= 1/2 + 5/12
= 11/12
3/8+x=5/6
= 1 - 2/5 = 3/5
7/8+8/17+9/17+1/8
= 2 + 1/ 17
3/4+(5/12-1/4)
= 1/2 + 5/12
= 11/12
3/8+x=5/6
追问
还有
追答
3/8+x=5/6
解: x = 5/6-3/8 = 11/24
x-(1/3-1/5)=8/15
解: x - 2/15 = 8/15
x = 2/5
38/45-(29-1/5)
= (38/45 + 9/45)-29
=- 27又 43/45
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