Vous prouver m'aidez svp c'est urgent !!!!!!!!!! pour ex 1,2,3,4.... Pergunta de ideia debdlyes92izi

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Vous prouver m'aidez svp c'est urgent !!!!!!!!!! pour ex 1,2,3,4

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Eliott78

Verified answer

Exercice n°1
a) m + 17 = 45
m = 45 - 17
m = 28

b) x - 59 = 89
x = 89 + 59
x = 148

c) 74 - z = -32
-z = -32 -74
-z = -106
106 = z

d) t - 81 = -59
t = 81 - 59
t = 22

Exercice n°2
a) 7x = 84
x = $\frac{84}{7}$
x = 12

b) -9 t = 81
-t = $\frac{81}{9}$
-t= 9
9 = t

c) $\frac{a}{12}$ = 6
$\frac{1}{12}$ a = 6
a = $\frac{6*12}{1}$
a = 72

d) $\frac{g}{6}$ = 21
$\frac{1}{6}$ g = 21
g = $\frac{21*6}{1}$
g = 126

Exercice n°3
a) 8x + 7 = 31
8x = -7+31
8x = 24
x = $\frac{24}{8}$
x = 3

b) -8d -2= 34
PGCD (8, 2, 34) = 2
-8d-2 = 34/2
-4d -1 = 17
-4d = 17 + 1
-4d = 18
d = $- \frac{18}{4} = - \frac{9}{2}$
d = -4,5

Exercice n° 4
a) 12y -9= 7y + 6
12y - 7y = 9 + 6
5y = 15
y = $\frac{15}{5}$
y = 3

b) -12s +76 = 2s + 16
PGCD(12, 76, 2, 16) = 2
-12s + 76 = 2s +16/2
-6s + 38 = s + 8
- 7s = -30
s = $\frac{30}{7}$

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bdlyes92izi c est quoi PGCD et ex 3b est faux