Question

what should be added to sum of 13/15 and 27/20 to get 91/60​

Answer 1

Answer:

X+13/15 +27/20=91/60

(x+52+81)/60=91/60

X+133=91

X=91-133=-42

Step-by-step explanation:

Answer 2

Let the number be x

According to the question

$( \frac{13}{15} + \frac{27}{20}) + x = \frac{91}{60} \\ (\frac{52 + 81}{60}) + x = \frac{91}{60} \\ \frac{133}{60} + x = \frac{91}{60} \\ x = \frac{91}{60} - \frac{133}{60} \\x = \frac{91 - 133}{60} \\ x = \frac{ - 42}{60} \\ x = \frac{ - 21}{30}$