1/2 + (4/5 - 0.3 ) решите плис

Question

1/2 + (4/5 - 0.3 ) решите плис

Answer 1

1/2 + (4/5 - 3/10) = 1/2 + (8/10 -3/10) = 1/2 + 5/10 = 5/10+5/10 =10/10 = 1