Question

12. Calcule o valor das expressões:
-
a) 2.3-10
b) 3.4 - 20 =
c) -15 +2.3 = d) 10 + (+2).(-5) =
e) 31 - (-9).(-2) =
f) (-7).(+5) + 50​

Answer 1

Resposta:

A)2.3-10=4

6-10

4

B)3.4-20=8

12-20

8

C)-15+2.3=-21

-15+6

-21

D)10+(+2).(-5)=-20

10+-10

-20

E)31-(-9).(-2)=+13

31-+18

+13

F)(-7).(+5)+50

-35+50

-85

espero ter ajudado

Answer 2

Resposta:

a) -4

b) -8

c) -9

d) 0

e) 13

f) 15