Question

Simplifique:

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

Resposta:

A=(2/3+1/3)÷(1/4+2/4)

1÷3/4

1/1×4/3

4/3

B=2/5×[1×2/3×(3/5-1/3)]

2/5×[2/3×4/15]

2/5×8/45

16/225

C={3/5+[1+(3/5-1/5)+2÷1/3]-1}

{3/5+[1+2/5+6]-1}

3/5+37/5-1

7