Question

1.1. Resolva as expressões e simplifique quando nescessarias.

A)(2/3+1/3)÷(1/4+2/4)=

B)2/5[1×2/3×(3/5-1/3)]=

C){3/5+[1+(3/5-1/5)+2÷1/3]-1}=

Answer 1

a) (2/3+1/3):(1/4+2/4)
= 1:3/4
= 4/3

b) 2/5x(2/3x4/15)
= 2/5x8/45
= 16/225

c) 3/5+(2/5+2x3)
= 3/5+(2/5+6)
= 3/5+32/5
= 7

Espero ter ajudado!