Question

Calcule A) 1/2 + 3/7 B)2/3 + 4/9 C) ( -o,64 ) + ( -o,28 ) D) ( 11,05 ) + ( -13)

Answer 1

Resposta:

a) 1/2 +3/7

7/14 +6/14

=13/14

b) 2/3 +4/5

6/9 +4/9

= 10/9 simplificando 1 e 1/9

c)0,64

+0,28

= -0,92

d)13,00

+11,05

= -01,95