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-3+2x=4-5x

combien vaut x?


Répondre :

-3+2x=4-5x
-3-4=-2x-5x
-7=-7x
-7/-7=x
7/7=x
1=x

bonne courage :)

Mes souvenirs me dit : +3-3+2x=3+4-5x

                                      2x=7-5x

                                      5x+2x=7-5x+5x

                                      7x=7

                                      7x/7=7/7

                                      x=1 normalement c ca