Question

A)(-10) • (-7) - 45 : (+9) - (-7) B)- 4 + (3 - 5) - (-2 ) C)10 + (+ 8 – 1) – (– 3 + 12 – 15) D)( +12 – 9) . (-2 – 8)

Answer 1

Resposta:

 (+101) + (-101) = s) (-1050) + (+876) = 7) Calcule a) 4 + 10 + 8 = b) 5 - 9 + 1 = c) -8 - 2 + 3 = d) -15 + 8 - 7 = e) 24 + 6 - 12 

Answer 2

Respostas:

a) (-10) x(-7)-45: (+9) - (-7)

+70 - 45: (+9)- (-7)

+70 -5 + 7

+70+2 = 72

b)- 4 + (3 - 5) - (-2 )

-4 + (-2)+2

-4-2+2

-6+2= -4

C)10 + (+ 8 – 1) – (– 3 + 12 – 15)

10 + (+7) - (+9 - 15)

10+7-(-6)

17+6= 23

D)( +12 – 9) . (-2 – 8)

+3 . (-10)

-30