Tìm x: a) x – 6/8 + 1/4 = 3 b) x- 7+ 4/6 = -1/5 c) x – 7/3 = 1/2 – -3/10 d) 2x – 3/5 = 4/7 . 14/6 e) 10/21 – 3x = 3/8 .4

1 bình luận về “Tìm x: a) x – 6/8 + 1/4 = 3 b) x- 7+ 4/6 = -1/5 c) x – 7/3 = 1/2 – -3/10 d) 2x – 3/5 = 4/7 . 14/6 e) 10/21 – 3x = 3/8 .4”

1. a) x-6/8+1/4=3

   x-1/2=3

   x=7/2

   b) x-7+4/6=-1/5

   x-19/3=-1/5

   x=92/15

   c) x-7/3=1/2-(-3/10)

   x-7/3=4/5

   x=47/15

   d) 2x-3/5=4/7.14/6

   2x-3/5=4/3

   2x=29/15

   x=29/30

   e) 10/21-3x=3/8.4/15

   10/21-3x=1/10

   3x=79/210

   x=79/630

   #Darmon

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