April 2019 1 73 Report
4EME Bonjour vous serez gentille de me faire les 2 exercices car j'ai pas compris.
Réduire chaque expressions.
a) 13x + 9x = b) 5y - 7y = c) - 3z -z
d) 7a (au carré) - 3a (au carré) e) b -4b f) 3c+c-2c

a) 3x-5+4x+2 b) -2y+3-4y+6 c) 5a+7-a+7 d) 5b (au carré) +3b-2b-3b (au carré)
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