Раскройте скобки : 8,31-(7,2-1,89)

Question

Раскройте скобки : 8,31-(7,2-1,89)

Answer 1

8,31-(7,2-1,89) = 8.31 - 7.2 + 1.89 = 10.2 - 7.2 = 3;

Answer 2

8.31-(7.2-1.89)=8.31-7.2+1.89=2.99