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Sanathys
@Sanathys
May 2019
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Bonsoir,
Pourriez vous m'aider pour le deuxième exercice s'il vous plait ? Je suis en cinquième.
D'avance merci
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GirlDuBahut
Verified answer
Bonsoir,
Ex 1
1) a) (6+8)x3-1
= 14x3-1
= 42-1
= 41
b) (7+8)x3-1
= 15x3-1
= 45-1
= 44
2) (9+8)x3-1
= 17x3-1
= 51-1
= 50
3) (34+8)x3-1
= 42x3-1
= 126-1
= 125
Ex 2
a) 30-4-2-1-5-6-4-3
= 26-2-1-5-6-4-3
= 24-1-5-6-4-3
= 23-5-6-4-3
= 18-6-4-3
= 12-4-3
= 8-3
= 5
Il y’a 5 élèves qui ont envoyé 3 SMS.
b) 0x4+1x2+2x1+3x5+4x5+5x6+6x4+7x3
= 0+1x2+2x1+3x5+4x5+5x6+6x4+7x3
= 0+2+2x1+3x5+4x5+5x6+6x4+7x3
= 0+2+2+3x5+4x5+5x6+6x4+7x3
= 0+2+2+15+4x5+5x6+6x4+7x3
= 0+2+2+15+20+5x6+6x4+7x3
= 0+2+2+15+20+30+6x4+7x3
= 0+2+2+15+20+30+24+7x3
= 0+2+2+15+20+30+24+21
= 2+2+15+20+30+24+21
= 4+15+20+30+24+21
= 19+20+30+24+21
= 39+30+24+21
= 69+24+21
= 93+21
= 114
114 messages ont été envoyés au total.
3 votes
Thanks 1
sanathys
MERCI Girl du bahut
GirlDuBahut
De rien ;)
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Verified answer
Bonsoir,Ex 1
1) a) (6+8)x3-1
= 14x3-1
= 42-1
= 41
b) (7+8)x3-1
= 15x3-1
= 45-1
= 44
2) (9+8)x3-1
= 17x3-1
= 51-1
= 50
3) (34+8)x3-1
= 42x3-1
= 126-1
= 125
Ex 2
a) 30-4-2-1-5-6-4-3
= 26-2-1-5-6-4-3
= 24-1-5-6-4-3
= 23-5-6-4-3
= 18-6-4-3
= 12-4-3
= 8-3
= 5
Il y’a 5 élèves qui ont envoyé 3 SMS.
b) 0x4+1x2+2x1+3x5+4x5+5x6+6x4+7x3
= 0+1x2+2x1+3x5+4x5+5x6+6x4+7x3
= 0+2+2x1+3x5+4x5+5x6+6x4+7x3
= 0+2+2+3x5+4x5+5x6+6x4+7x3
= 0+2+2+15+4x5+5x6+6x4+7x3
= 0+2+2+15+20+5x6+6x4+7x3
= 0+2+2+15+20+30+6x4+7x3
= 0+2+2+15+20+30+24+7x3
= 0+2+2+15+20+30+24+21
= 2+2+15+20+30+24+21
= 4+15+20+30+24+21
= 19+20+30+24+21
= 39+30+24+21
= 69+24+21
= 93+21
= 114
114 messages ont été envoyés au total.