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Sagot :

TEAMCE

Bonsoir,

Résoudre les équations:

a.

x + 4 = -2x + 19

x + 4 - 4 = -2x + 19 - 4

x = -2x + 15

x + 2x = -2x + 15 + 2x

3x = 15

3x/3 = 15/3

x = 5

✅

b.

5x + 1 = 21

5x + 1 - 1 = 21 - 1

5x = 20

5x/5 = 20/5

x = 4

✅

c.

2x - 9 = 17

2x - 9 + 9 = 17 + 9

2x = 26

2x/2 = 26/2

x = 13

✅

Bonne soirée

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