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Sagot :

bonjour:je suis en 4eme

 

5x+11=18

5x=18-11

5x=7

x=7/5

x=1,4

 

2x+2x7=-1

2x+14=-1

2x=-1-14

2x=-15

x=-15/2

x=-7,5

jespere t'avoir aider :)

 

CARYS

5x + 11 = 18  

5x = 18 - 11

5x = 7

x = 7/5

x = 1.4 

 

2(x + 7) = -1 

2x + 14 = -1

2x = -1 - 14

2x = -15

x = -15/2

x = -7.5

 

voila :)

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