Question

find the difference of 21/25and18/20​

Answer 1

Answer:

$\frac{21}{25} - \frac{18}{20} \\ \\ = \frac{(21 \times 4) - (18 \times 5)}{100} \\ \\ = \frac{84 - 90}{100} \\ \\ = \frac{ - 4}{100} \\ \\ = - 0.04$

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Answer 2

Answer:

-3/50

Step-by-step explanation:

We have 21/25 and 18/20

So,21/25-18/20

LCM of 20 and 25=2*2*5*5

=(21/25*4/4)-(18/20*5/5)

=84/100-90/100

=-6/100

=-3/50

Therefore the difference of 21/25 and 18/20 is -3/50

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