Question

Calcule o valor das expressões numéricas.

Answer 1

Resposta:

Explicação passo a passo:

a.

2/3+5/6-1/2=

4/6+5/6-3/6=

9/6-3/6=

6/6=

1

b.

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

24/40-(-20/40+30/40)+(4/40-25/40)=

24/40-(-10/40)+(-21/40)=

24/40+10/40-21/40=

34/40-21/40=

13/40