Question

1) Calcule:
a) (+15)+(+9) =
b) (-22)+(+31) =
c) (-13)+(-15) =
d) -35 -12 =
e) (-71)-(0)=
f) (-42)-(-7)-(-8)=
g) (-12).(+3).(+1) =
h) (+6).(-3).(+2) =
i) (-12).(-5).(+4).(-1) =
Ajuda

Answer 1

Resposta:

a)+24

b)+9

c)-28

d)-47

e)-71

f)-27

g)-36

h)-36

i)-240

ufaaa , demoroo mais consegui

Answer 2

$a)( + 15) + ( + 9) \\ 15 + 9 \\ \boxed{24}$

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$b)( - 22) + ( + 31) \\ - 22 + 31 \\\boxed{9}$

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$c)( - 13) + ( - 15) \\ - 13 - 15 \\ \boxed{ - 28}$

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$d) - 35 - 12 \\ - (35 + 12) \\ \boxed{ - 47}$

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$e)( - 71) - (0) \\ \boxed{ - 71}$

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$f)( - 42) - ( - 7) - ( - 8) \\ - 42 + 7 + 8 \\ - 42 + 15 \\ \boxed{ - 27}$

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$g)( - 12) \times ( + 3) \times ( + 1) \\ ( - 12) \times 3 \\ \boxed{ - 36}$

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$h)( + 6) \times ( - 3) \times ( + 2) \\ - 18 \times 2 \\ \boxed{ - 36}$

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$i)( - 12) \times ( - 5) \times ( + 4) \times ( - 1) \\ 60 \times ( - 4) \\\boxed{ - 240}$

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Att, IzabelaCristina2006 ❤️ ♈