5x+4x+6x+7x+3x+5x=60 9+x=65-4 34(2x-4)=

2 bình luận về “5x+4x+6x+7x+3x+5x=60 9+x=65-4 34(2x-4)=”

1. 5x+4x+6x+7x+3x+5x=60

   x×(5+4+6+7+3+5)=60

   x×30=60

   x      =60:30

   x      =2

   Vậy, x=2.

   —————————–

   9+x=65-4

   9+x=61

       x=61-9

       x=52

   Vậy, x=52.

   —————————–

      34(2x-4)=90

   2x-4=90:34

   2x-4=2,64

   2x   =6,64

     x   =3,32

   Vậy, x=3,32.

   $\text{You can't use 'macro parameter character \#' in math mode}$

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2. #wdr

   5x+4x+6x+7x+3x+5x=60

   x(5+4+6+7+3+5)=60

   x.30=60

   x= 60:30

   x=2

   —–

   9+x=65-4

   9+x=61

   x=61-9

   x= 52

   —–

   34(2x-4)=90

   2x-4=90:34

   2x-4= 2,64

   2x= 2,64+4

   2x= 6,64

   x= 6,64:2

   x= 3,32

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