Question

Express -3/5 as a rational number with denominator
1. 20
2. 30
3. 35
4.40​

Answer 1

Answer:

(1) -12/20

(2)-18/30

(3)-21/35

(4)-24/40

Answer 2

Answer:

Given, -3/5

a) Since we have to make denominator equal to 20. Then, we must multiply both numerator and denominator by 4.

So,

(-3) /5 = (-3) / 5 × 4/4 = -12/20

b) Since we have to make denominator equal to 30. Then, we must multiply both numerator and denominator by 6.

So,

(-3) / 5 = (-3) / 5 × 6/6 = -18/30

c) Since we have to make denominator equal to 35. Then, we must multiply both numerator and denominator by 7.

So,

(-3) / 5 = (-3) / 5 × 7/7 = -21/35

d) Since we have to make denominator equal to 40. Then, we must multiply both numerator and denominator by 8.

So,

(-3) / 5 = (-3) / 5 × 8/8 = -24/40