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Svp aidez moi , 9x + 81 = … ?

2/ 3x – 27 = … ?

3/ 33 – 11y = … ?

4/ 14y + 21x + 49 = … ?

Merci

Sagot :

Réponse;

1 / 9x+ 81

9x= -81

x= -81 /9

x= -9

2 / 3x-27

3x= 27

x= 27 /3

x=9

3 / 33-11y

-11y= -33

y= -33 /-11

y= 3

4 / 14y+ 21x + 49

?

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