A = ( $\frac{5}{2}$ – $\frac{3}{4}$ + $\frac{4}{3}$ ) – ( $\frac{4}{3}$ + $\frac{3}{4}$ – 2 ) – ( $\frac{1}{2}$ – $\frac{3}{7 }$ )

0 bình luận về “A = ( $\frac{5}{2}$ – $\frac{3}{4}$ + $\frac{4}{3}$ ) – ( $\frac{4}{3}$ + $\frac{3}{4}$ – 2 ) – ( $\frac{1}{2}$ – $\frac{3}{7 }$ )”

1. `A= (5/2 – 3/4 + 4/3) – (4/3 + 3/4 – 2) – (1/2 – 3/7)`

   `A=5/2 – 3/4 + 4/3- 4/3 – 3/4 +2 – 1/2 + 3/7`

   `A= (5/2 – 1/2) – (3/4 + 3/4) + (4/3 – 4/3) + 2 + 3/7`

   `A= 2 – 3/2 + 2 + 3/7`

   `A= 4 – 3/2 + 3/7`

   `A= 5/2 + 3/7`

   `A=41/14`

   Vậy `A= 41/14`

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2. Đáp án:

   $\\$

   `A = (5/2 – 3/4 + 4/3) – (4/3 + 3/4 – 2) – (1/2 – 3/7)`

   `↔ A = 5/2 – 3/4 + 4/3 – 4/3 – 3/4 + 2 – 1/2 + 3/7`

   `↔ A = (5/2 – 1/2 + 2)+ (-3/4 – 3/4) + (4/3 – 4/3) + 3/7`

   `↔ A = (2 + 2)  – 3/2 + 3/7`

   `↔ A = 4 – 3/2 + 3/7`

   `↔ A = 8/2 – 3/2 + 3/7`

   `↔ A = 5/2 + 3/7`

   `↔ A = 35/14 + 6/14`

   `↔ A = 41/14`

   Vậy `A = 41/14`

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