Bonjour pouvez vous m aidez silvouplait a resoudre cette equation

8(a - 10) + 40 = 3a

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Grade: Education Subject: mathematiques
Bonjour pouvez vous m aidez silvouplait a resoudre cette equation

8(a - 10) + 40 = 3a
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Best Answer
(153)
Bonsoir,

8(a - 10) + 40 = 3a
8a - 80 + 40 = 3a
8a - 3a = 80 - 40
5a = 40
a = 40/5
a = 8
(178)
bonsoir,

8(a -10) + 40 = 3a
8a - 80 +40 = 3a
8a - 40 = 3a
8a -3a = 40
5a = 40

d'ou

a = 40/5
a = 8