Respuesta :

Answer:

Step-by-step explanation:

Find common denominators:

7: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70

9: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90

Find the matching multiple: 63

?/63 + ?/63

Since 7 x 9 is 63, 3/7 = multiply the numerator with the factor of the denominator.

3x9= 27 = 27/63 = 3/7

Since 9 x 7 is 63, 5/9 = multiply the numerator with the factor of the denominator.

5x7= 35 = 35/63 = 5/9

27 + 35 = 62

27/63 + 35/63 = 62/63!

Hope this helped

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