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Exerelee 8
Calculez en regroupant les termes de meme signe.
A = 15 + 3 - 6 + 2 - 7
B = -8 + 4 - 5 - 6 + 11
C = (+ 10) - (-4) + (-1) + (+ 5) - (+ 9)
D = (-15) - (+14) + (+ 30) + (-15) - (-20)
Bonjour pouvez-vous m’aider pour cette exercice svp

Sagot :

VINS

bonsoir

A =  20 - 13 = 7

B  = 15 - 19 = - 4

C  = 10 + 4 - 1 + 5 - 9  = 19 - 10 = 9

d = - 15 - 14 + 30 - 15 + 20 =  50 - 44 = 6

bjr

A = 15 + 3 - 6 + 2 - 7

= 18 - 4 - 7

= 14 - 7

= 7

B = -8 + 4 - 5 - 6 + 11

= -4 - 11 + 11

= -4

C = (+ 10) - (-4) + (-1) + (+ 5) - (+ 9)

= 10 + 4 - 1 + 5 - 9

= 14 + 4 - 9

= 18 - 9

= 9

D = (-15) - (+14) + (+ 30) + (-15) - (-20)

= -15 - 14 + 30 - 15 + 20

= -29 + 30 + 5

= 6

bonne soirée

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