c'est un devoirs maison que je comprend pas tellement merci de m'aider a) (-6)+(+8) b)(+15)+(-7) c) (-12)+(+5)
Mathématiques
Anonyme
Question
c'est un devoirs maison que je comprend pas tellement merci de m'aider
a) (-6)+(+8) b)(+15)+(-7)
c) (-12)+(+5) d)(-2)+(-3)
e) (-4)-(+2) f)(+8)-(+5)
g)(-5)-(-9) h)(+2)-(-3)
i)-3-5 j)-4+10
k)7-10 l)-11+9
m) (-12)+(+8)+(-13)+(+18)
n)(+15)-(-7)+(-14)-(+9)
p)-8+12-3+19-13
q)-12-9+10+14-3
r)12-(-3+19)
s)-14+(6-9)-(-32+6)
t)25-(32-3)-4
2 Réponse
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1. Réponse nonoduchablais
Salut :)
a) (-6)+(+8) = -6 + 8 = 2
b)(+15)+(-7) = 15 - 7 = 8
c) (-12)+(+5) = -12 + 5 = -7
d)(-2)+(-3) = -2 - 3 = -5
e) (-4)-(+2) = -4 - 2 = -6
f)(+8)-(+5) = 8 - 5 = 3
g)(-5)-(-9) = -5 + 9 = 4
h)(+2)-(-3) = 2 + 3 = 5
i)-3-5 = -8
j)-4+10 = 6
l)-11+9 = -2
m) (-12)+(+8)+(-13)+(+18) = -12 + 8 - 13 + 18 = -25 + 25 = 0
n) (+15)-(-7)+(-14)-(+9) = 15 + 7 - 14 - 9 = 22 - 23 = -1
p)-8+12-3+19-13 = -24 + 31 = 7
q)-12-9+10+14-3 = -24 + 24 = 0
r)12-(-3+19) = 12 + 3 - 19 = -4
s)-14+(6-9)-(-32+6) = -14 + 6 - 9 + 32 - 6 = -29 + 38 = 9
t)25-(32-3)-4 = 25 - 32 + 3 - 4 = 28 - 36 = -8
J'espère t'avoir aidé(e) ! :) -
2. Réponse misout1
(-6)+(+8)
= +2
( -12)+(+5)
= -7
(-4)-(+2)
= -6
(-5)-(-9)
=4
-3-5
= -8
7-10
= -3
(-12)+(+8)+(-13)+(+18)
= -25 +26
= 1
(+15)-(-7)+(-14)-(+9)
= (+15) +(+7)+(-14)+(-9)
= +22 -23
= -1
-8+12-3+19-13
= -24 +31
= 7
-12-9+10+14-3
= -24+24
=0
12-(-3+19)
=12+(-3-19)
=12 -22
= -10
-14+(6-9)-(-32+6)
=-14+(6-9)+(-32-6)
=-14-3-38
=-55
25-(32-3)-4
=25+(32+3)-4
=25+35-4
= 60-4
=56
(+15)+(-7)
=8
(-2)+(-3)
= -5
(+8)-(+5)
=(+8)+(-5)
=3
(+2)-(-3)
=(+2)+(+3)
=5
-4+10
=6
-11+9
=-2