Question

А)(1:20)+(1:30)
Б)(1:9)+(1:9)+(1:9)

Answer 1

а) 1/20+1/30=1/12
б) 1/9+1/9+1/9=1/3

Answer 2

120+130=360+2/60=560=112
19+19+19=3*19=13

Answer 3

десятичной дробью плиз

Answer 4

1) =0.083(3) 2)0.3(3)