Question

Me ajudem com a respostas dessas expressoes

Answer 1

a) {[(5,73 + 7,69) . 2] + 5,14} : 2

{[13,42 . 2] + 5,14} : 2

{26,84 + 5,14} : 2

31,98 : 2

15,99

b) (-2/3)²  + 1/5 . 5/3 - (-2)³

4/9 + 5/15 - (-8)

tirando o mmc entre 9 e 15 = 45

20 + 15 / 45 + 8

35 / 45 + 8

0,777 + 8

8,777