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Bonsoir, qui peut m’aidez svp ?

Bonsoir Qui Peut Maidez Svp class=

Sagot :

ENFORCER59

Bonsoir :)

A) 23 + 16x = 31

16x = 31 - 23

16x = 8

x = 8/16 = 0,5

B) 3x - 14 = 9

3x = 9 + 14

3x = 23

x = 23/3 = 7,6

C) 2,5x + 5,6 = 12

2,5x = 12 - 5,6

2,5x = 6,4

x = 6,4/2,5 = 2,56

D) 5x + 1 = 2x + 19

5x - 2x = 19 - 1

3x = 18

x = 18/3 = 6

E) 8x + 3 = x + 15

8x - x = 15 - 3

7x = 12

x = 12/7 = 1,71

F) 7,8i - 8 = 1,3i + 2

7,8i - 1,3i = 2 + 8

6,5i = 10

i = 10/6,5 = 1,53

Bonne soirée :)