Solve each inequality. The 1. 7(7a - 9) = 84
Mathématiques
maleksami
Question
Solve each inequality. The
1. 7(7a - 9) = 84
1. 7(7a - 9) = 84
2 Réponse
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1. Réponse meemameema
Réponse :
1. 7 (7a - 9) = 84
7 x 7a - 7x9 = 84
49a - 63 = 84
49a = 84 + 63
49a = 147
a = 147 / 49
a = 3
Vérification : 7 (7x3 - 9) = 84
7 (21 - 9 ) = 84
7 x 12 = 84
84 = 84
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2. Réponse telephone16
Réponse :
Bonjour
Explications étape par étape
7 (7a -9) = 84
49a -63 = 84
49a = +63 +84
a = 147/49 = 3
7 (7 X 3 -9) = 84
7 (21 -9) = 84
7 (12) = 84
84 = 84