Question

Simplify (-5+13) (5+13)
7-25​

Answer 1

Answer:

We have the following:

(i)

5

8

and

7

12

By cross multiplication, we get:

5 × 12 = 60 and 7 × 8 = 56

However, 60 > 56

∴

5

8

>

7

12

(ii)

5

9

and

11

15

By cross multiplication, we get:

5 × 15 = 75 and 9 × 11 = 99

However, 75 < 99

∴

5

9

<

11

15

(iii)

11

12

and

15

16

By cross multiplication, we get:

11 × 16 = 176 and 12 × 15 = 180

However, 176 < 180

∴