Question

Express 3/5 as a rational number with numerator:(i) 6 (ii) -15 (iii) 21 (iv) -27

Answer 1

Answer:

Step-by-step explanation:

(i)6

=  >  3/5 

Multiply the numerator & denominator by 2.

=  >  3/5 × 2/2

=  > 6/10

(ii)-15

=  >  3/5

Multiply the numerator & denominator by -5.

=  >  3/5 × -5/-5

=  >  -15/-125

(iii)21

=  >  3/5

Multiply the numerator & denominator by 7.

=  >  3/5 × 7/7

=   > 21/35

(iv)-27

=  >  3/5

Multiply the numerator & denominator by -9.

=  >  3/5 × -9/-9  

=  >  -27/-45

Hope it will be helpful to you.

Answer 2

Answer:

a) 6

3/5÷6

3/5×1/6

3×2/5×2

6/10

b) -15

3/5÷-15

3/5×1/-15

3×-5/5×5

-15/25

b) 21

3/5÷21

3/5×1/21

3×7/5×7

21/35

c) -27

3/5÷-27

3/5×1/-27

3×-9/5×9

-27/45