Question

calcule.
a) (+8)+(-7)+(-3)
b)(+2)-(+5)-(+3)
c)(-3)+(-6)-(+10)
d)(+10)-(-20)-(+30)
e)(-4)-(-8)-(-5)
por favor me ajudem

Answer 1

a)
= (+ 8) + (- 7) + (- 3)
= 8 - 7 - 3
= 8 - 10
= - 2
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b)
= (+ 2) - (+ 5) - (+ 3)
= 2 - 5 - 3
= - 3 - 3
= - 6
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c)
= (- 3) + (- 6) - (+ 10)
= - 3 - 6 - 10
= - 9 - 10
= - 19

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d)
= (+ 10) - (- 20) - (+ 30)
= 10 + 20 - 30
= 30 - 30
= 0

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e)
= (- 4) - (- 8) - (- 5)
= - 4 + 8 + 5
= - 4 + 13
= 9