Question

11) Determine o valor de cada expressão numérica :
a) 6+ (-9 +1
b) 8-6 + 10
c) - 10+ (6 - 4
d) - 5+ (2 - 4) - (7-1)​

Answer 1

a)

= 6 + (- 9 + 1)

= 6 + (-8)

= 6 - 8

= - 2

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b)

= 8 - (- 6 + 10)

= 8 - ( 4)

= 8 - 4

= 4

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c)

= - 10 + (6 - 4)

= - 10 + 2

= - 8

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d)

= 2 + (2 + 5 -7)

= 2 + ( 7 - 7)

= 2 + 0

= 2