Respuesta :

mkampi430

Answer:

263/12

Step-by-step explanation:

.25 = 1/4

so

20 1/4 = 81/4

9 1/3 = 28/3

81/4 - 28/3 + 11

make the denominator 12 to get a common denominator

243/12 - 112/12 + 132/12

263/12

you can not divide by any factors of 12 because you get a decimal