Question

divide the sum of 5 by 21st and 4 by 7 by their difference​

Answer 1

Answer:

7/17

Step-by-step explanation:

SUM

sum of 5/21 and 4/7

(5/21)X1 + (4/7)X3     (LCM)

5+12/21

17/21

DIFFERENCE

difference of 5/21 and 4/7

(5/21)X1 - (4/7)X3     (LCM)

5-12/21

7/21                          (7X3=21)

1/3

DIVISION

1/3÷17/21

1/3X21/17

7/17                          (7X3=21)

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