Question

-11 supra lui 12+ 11 ssupra lui 20=

Answer 1

-11/12 = -55/60
11/20 = 33/60

-55/60+33/60=-22/60=-11/30

Answer 2

$\frac{-11}{12} + \frac{11}{20} = \frac{-220+132}{240} = \frac{-88}{240}simplificam cu 8= \frac{-11}{30}$