Question

ples help me ... hi hi plese

Answer 1

Answer:

1. [ i ] = 90/21

[ ii ] = 31/35

Step-by-step explanation:

1. [ i ]divide the sum of means we have to add

the two rational numbers

9/7 + 7/3 = numerator

3/5 - 2/7 = denominator

Now we have you make the denominator same and add these

9/7 multiplied by 3 = 27/21

7/3  multiplied by 7 = 63 /21

when the denominators are same we can add or subtract

27 + 63 = 90

= 90/21

[ ii ]divide the  difference of means we have to add

the two rational numbers

3/5 = numerator

2/7 = denominator

Now we have you make the denominator same and add these

3/5 multiplied by 7  = 21 / 35

2/7 multiplied by 5  = 10 / 35

when the denominators are same we can add or subtract

21 + 10 = 31

= 31/35