tìm x a.(x+ 7/4) x2/3 = 6 b. x : 5 /3 + 2/5 = 9/ 5 c .1/ 2 : 3 + x = 5 /3 d .x +4 /5=4 /5+ (3/ 7+3 /5) e. 5/ 7+x/ 35=4 /5 f

1 bình luận về “tìm x a.(x+ 7/4) x2/3 = 6 b. x : 5 /3 + 2/5 = 9/ 5 c .1/ 2 : 3 + x = 5 /3 d .x +4 /5=4 /5+ (3/ 7+3 /5) e. 5/ 7+x/ 35=4 /5 f”

1. Giải đáp:

   a, (x+7/4) x 2/3=6

   (x+7/4)=6:2/3

    (x+7/4)=9

   x=9-7/4

   x=29/4

   b, x:5/3+2/5=9/5

   x:5/3=9/5-2/5

   x:5/3=7/5

   x=7/5 x 5/3

   x=35/15=7/3

   c, 1/ 2 : 3 + x = 5/3

   3+x=1/2 x 5/3

   3+x= 5/6

   x=5/6-3

   x=5/6

   d .x +4 /5=4 /5+ (3/ 7+3 /5)

   x+4/5=4/5+36/35

   x+4/5=64/35

   x=64/35-4/5

   x=36/35

   e. 5/ 7+X/ 35=4 /5

   X/35=4/5-5/7

   X/35=3/35

   X x 35=35×3

   Xx35=105

   X=105:35

   X=3

   f .1313/2828+ x =2323/ 4646

   x=2323/4646 -1313/2828

   x=1/28

   g .23/ 69- x =17/ 153
   x=23/69-17/153

   x=2/9

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