4.75x4又3/4+4有3/4+4又3/4x4又1/4= 3/4x58+58除以4-64x1/4= 73.8除以9+73.8除以1又1/8=
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解决时间 2021-04-08 01:04
- 提问者网友:
- 2021-04-07 17:48
4.75x4又3/4+4有3/4+4又3/4x4又1/4= 3/4x58+58除以4-64x1/4= 73.8除以9+73.8除以1又1/8=
最佳答案
- 五星知识达人网友:不如潦草
- 2021-04-07 18:50
.75x4又3/4+4有3/4+4又3/4x4
=(75+1+4)*4又3/4
=80*4+80*3/4
=320+60
=380
3/4x58+58除以4-64x1/4
=1/4*58*3+1/4*58-64*1/4
=1/4*(164+58-64)
=1/4*158
=39.5
73.8除以9+73.8除以1又1/8
=73.8*1/9+73.8*8/9
=73.8*(1/9+8/9)
=73.8
666.66x7778+333.33x4444
=666.66*7778+666.66*2222
=666.66*(7778+2222)
=666.66*10000
=6666600
(1+1/2+1/3+1/4+1/5)x(1/2+1/3+1/4+1/5+1/6)-(1+1/2+1/3+1/4+1/5+1/6)x(1/2+1/3+1/4+1/5)
=(1/2+1/3+1/4+1/5+1/6)+(1/2+1/3+1/4+1/5)*(1/2+1/3+1/4+1/5+1/6)-(1/2+1/3+1/4+1/5)-(1/2+1/3+1/4+1/5+1/6)*(1/2+1/3+1/4+1/5+)
=0
追问:我不能采纳因为你起码有2题错了
追答:(1+1/2+1/3+1/4+1/5)x(1/2+1/3+1/4+1/5+1/6)-(1+1/2+1/3+1/4+1/5+1/6)x(1/2+1/3+1/4+1/5)
令1/2+1/3+1/4+1/5=x 1/2+1/3+1/4+1/5+1/6=y
原式=(1+x)*y-(1+y)*x
=1+xy-1-xy
=0
4.75x4又3/4+4有3/4+4又3/4x4又1/4
=4.75*(4.75+1+4.25)
=4.75*10
=10
3/4x58+58除以4-64x1/4
=1/4*58*3+1/4*58-64*1/4
=1/4*(174+58-64)
=1/4*168
=42
数字看不清
=(75+1+4)*4又3/4
=80*4+80*3/4
=320+60
=380
3/4x58+58除以4-64x1/4
=1/4*58*3+1/4*58-64*1/4
=1/4*(164+58-64)
=1/4*158
=39.5
73.8除以9+73.8除以1又1/8
=73.8*1/9+73.8*8/9
=73.8*(1/9+8/9)
=73.8
666.66x7778+333.33x4444
=666.66*7778+666.66*2222
=666.66*(7778+2222)
=666.66*10000
=6666600
(1+1/2+1/3+1/4+1/5)x(1/2+1/3+1/4+1/5+1/6)-(1+1/2+1/3+1/4+1/5+1/6)x(1/2+1/3+1/4+1/5)
=(1/2+1/3+1/4+1/5+1/6)+(1/2+1/3+1/4+1/5)*(1/2+1/3+1/4+1/5+1/6)-(1/2+1/3+1/4+1/5)-(1/2+1/3+1/4+1/5+1/6)*(1/2+1/3+1/4+1/5+)
=0
追问:我不能采纳因为你起码有2题错了
追答:(1+1/2+1/3+1/4+1/5)x(1/2+1/3+1/4+1/5+1/6)-(1+1/2+1/3+1/4+1/5+1/6)x(1/2+1/3+1/4+1/5)
令1/2+1/3+1/4+1/5=x 1/2+1/3+1/4+1/5+1/6=y
原式=(1+x)*y-(1+y)*x
=1+xy-1-xy
=0
4.75x4又3/4+4有3/4+4又3/4x4又1/4
=4.75*(4.75+1+4.25)
=4.75*10
=10
3/4x58+58除以4-64x1/4
=1/4*58*3+1/4*58-64*1/4
=1/4*(174+58-64)
=1/4*168
=42
数字看不清
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