Question

express -3/5as a rational number with denominator 20

Answer 1

-12/20

the meaning of the question is that mutiply something to that Fraction up and down so that the denominator become 20


so we should multiply it by 4 both up and down
to get - 12/20

Answer 2

The number $-\frac{3}{5}$  is expressed as rational number with denominator 20 is $-\frac{12}{20}$

Solution:

Rational number is the number which can be expressed in quotient or fraction.

The real number which is not rational is known as irrational.

To express the number $-\frac{3}{5}$  in a denominator of 20, the nearest number to multiply with the denominator of $-\frac{3}{5}$ to get 20 is 4.

Therefore, to get denominator 20 we multiply $\bold{\frac{-3}{5} \times \frac{4}{4}=\frac{-12}{20}}$