Question

Resolvas as expressões numéricas :
a) 15+(26-12)-8=
b) (22+4)-17+5=
c) (9+8)+(16-9)=
d) 25+[12+(8-5)+2]=​

Answer 1

a) 15+(26-12)-8 = 21
15+14-8=
29-8=
21

b) (22+4)-17+5 = 14
26-17+5
9+5
14

c) (9+8)+(16-9) = 24
17+(16-9)
17+7
24

d) 25+[12+(8-5)+2] = 42
25+[12+3+2]
25+[15+2]
25+17
42




Espero ter ajudado ;)