Question

Resolva as expressões numéricas:
A)2.(-4)+6.(+9)=
B)3.(-2)+5+4.(+12)÷(-6)+12=
C)4.(-2)+5-5+5.(+9)=
D)5.(-2)+3-4+5.(+3)+12=

Answer 1

Resposta:

A)2.(-4)+6.(+9)=

-8+54

46

B)3.(-2)+5+4.(+12)÷(-6)+12=

3.(-2)+5+4.-2+12

-6+5+-8+12

-1+4

3

C)4.(-2)+5-5+5.(+9)=

-8+5-5+5+45

-3+0+45

-3+45

42

D)5.(-2)+3-4+5.(+3)+12=

-10+3-4+15+12

-7-4+15+12

-11+15+12

+4+12

16

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