Question

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Answer 1

Step-by-step explanation:

simplify: 7/9-2/3

take the L.C.M

$\frac{7 - 3}{9} = \frac{1}{9}$

3/11+8/7

$\frac{21 + 88}{77} = \frac{109}{77}$

2.

Answer 2

Answer:

1. (i) 1/9 (ii) 109/77

2. (i) 3/5 (ii) 2/49

3. 37/90, 38/90, 39/90

4. total distance 43/21