-3/7-x=4/5+-2/3 x/5=2/5 -33/132=4/5-x 1/9=x/27 2/7-8/9.x=2/3 (dấu chầm là dấu nhân ) 2/5+3/2x=-1/5 2/9-7/8.x=1/3 x/5=5/6+-19

-3/7-x=4/5+-2/3
x/5=2/5
-33/132=4/5-x
1/9=x/27
2/7-8/9.x=2/3 (dấu chầm là dấu nhân )
2/5+3/2x=-1/5
2/9-7/8.x=1/3
x/5=5/6+-19/30
4/7.x-2/3=1/5
4/5+5/7:x=1/6
4/7-5/9:x=1/5
x:4/3-1/3=-5/4
x:15/8=-2/5
2/3-4/15x=-1/15 Bài tìm x

1 bình luận về “-3/7-x=4/5+-2/3 x/5=2/5 -33/132=4/5-x 1/9=x/27 2/7-8/9.x=2/3 (dấu chầm là dấu nhân ) 2/5+3/2x=-1/5 2/9-7/8.x=1/3 x/5=5/6+-19”

  1. * -3/7-x=4/5+-2/3
       -3/7-x=12/15-10/15
       -3/7-x=2/15
       x=-3/7-2/15
       x=-45/105-14/105
       x=-59/105
    * x/5=2/5
       5×x/5=5×2/5
       x=2
    * -33/132=4/5-x
       x=4/5-(-1/4)
       x=16/20+5/20
       x=21/20
    * 1/9=x/27
       9x=27×1 (nhân chéo)
       9x=27
       x=3
    * 2/7-8/9x=2/3
       8/9x=2/7-2/3
       8/9x=6/21-14/21
       8/9x=-8/21
       x=-8/21÷8/9
       x=-8/21×9/8
       x=-3/7
    * 2/5+3/2x=-1/5
       3/2x=-1/5-2/5
       3/2x=-3/5
       x=-3/5÷2/3
       x=-3/5×2/3
       x=-2/5
    * 2/9-7/8x=1/3
       7/8x=2/9-1/3
       7/8x=2/9-3/9
       7/8x=-1/9
       x=-1/9÷7/8
       x=-1/9×8/7
       x=-8/63
    * x/5=5/6+-19/30
       x/5=25/30-19/30
       x/5=1/5
       5×x/5=5×1/5
       x=1
    * 4/7x-2/3=1/5
       4/7x=1/5+2/3
       4/7x=3/15+10/15
       4/7x=13/15
       x=13/15÷4/7
       x=13/15×7/4
       x=91/60
    * 4/5+5/7÷x=1/6
       5/7÷x=1/6-4/5
       5/7÷x=5/30-24/30
       5/7÷x=-19/30
       x=5/7÷-19/30
       x=5/7×30/-19
       x=-150/133
    * 4/7-5/9÷x=1/5
       5/9÷x=4/7-1/5
       5/9÷x=20/35-7/35
       5/9÷x=13/35
      x=5/9÷13/35
      x=5/9×35/13
      x=175/117
    * x÷4/3-1/3=5/4
       x÷4/3=5/4+1/3
       x÷4/3=15/12+4/12
       x÷4/3=19/12
       x=19/12×4/3
       x=19/9
    * x÷15/8=-2/5
       x=-2/5×15/8
       x=-3/4
    * 2/3-4/15x=-1/15
       4/15x=2/3-(-1/15)
       4/15x=10/15+1/15
       4/15x=11/15
       x=11/15÷4/15
       x=11/15×15/4
       x=11/4

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