Question

calcular as expressões, efetuando-se primeiramente entre os parênteses:
a) (2- 1/3) + ( 1+ 1/2)=

Answer 1

(2 - 1/3) + (1 + 1/2) 
= (12 - 2)/6 + (6 + 3)/6
=10/6 + 9/6
= 19/6

Answer 2

$(2- \frac{1}{3} )+(1+ \frac{1}{2} )= \\ \\ ( \frac{6-1}{3} )+( \frac{2+1}{2} )= \\ \\ \frac{5}{3} + \frac{3}{2} = \\ \\ \frac{10+9}{6} = \frac{19}{6} \mapsto3~inteiros~e \frac{1}{6}$