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Sagot :

Bonjour,

7x + 0,07 = 5x + 20,05

⇒ 7x - 5x = 20,05 - 0,07

⇒ 2x = 19,98

⇒ x = 19,98 ÷ 2 = 9,99

Bonjour,

Résoudre:

7x + 0,07 = 5x + 20,05

7x-5x= 20.05-0.07

2x= 19.98

x= 19.98/2

x= 9.99

S= { 19.98/2 }

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