a) x+3/4=8/16 b) x:3/7=35/3 c) x.4/8=8/4

0 bình luận về “a) x+3/4=8/16 b) x:3/7=35/3 c) x.4/8=8/4”

1. @sad0708

   a) x + $\frac{3}{4}$ = $\frac{8}{16}$

             x = $\frac{8}{16}$ – $\frac{3}{4}$

             x = – $\frac{1}{4}$

   b) x ÷ $\frac{3}{7}$ = $\frac{35}{3}$

             x = $\frac{35}{3}$ × $\frac{3}{7}$

             x = 5

   c) x × $\frac{4}{8}$ = $\frac{8}{4}$

             x = $\frac{8}{4}$ ÷ $\frac{4}{8}$ 

             x = 4

    

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2. Đáp án:

   a,x+3/4=8/16

   16x/16+3×4/16=8/16

   16x+12=8

   16x=8-12

   16x=-4

   x=-1/4

   b,x:3/7=35/3

   x x 7/3=35/3

   3x/3 x 7/3 =35/3

   3x x 7=35

   21x=35

   x=5/3

   c,x x 4/8=8/4

   4x/4 x 2/4=8/4

   4x x 2=8

   8x=8

   x=1

    

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