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Sagot :

VINS

bonjour

3 x = 9

x = 3

5 y = 3

y =  3/5

4 z = -  7

z  =  - 7/4

- 2 z = -  8

z =  4

7 x = 4

x = 4 /7

- y = - 7.2

y = 7.2

- y = 15.7

y = - 15.7

4 .4 z = 0

z = 0

2.7 x = - 1.2

x =  - 12/27  = -  4/9

MPOWER

Réponse :

Bonjour,

a) 3x = 9

x = 9/3

x = 3

b) 5y = 3

y = 3/5

c) 4z = -7

z = -7/4

d) -2z = -8

z = -8/-2

z = 4

e) 7x = 4

x = 4/7

f) -y = -7,2

y = 7,2

g) -y = 15,7

y = -15,7

h) 4,4z = 0

z = 0

i) 2,7x = -1,2

x = -1,2/2,7

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