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Sagot :

AYUDA

bjr

4x - 5 = 35

4*x - 5 = 35

4*x = 35 + 5

4*x = 40

4*x/4 = 40/4

x = 10

on a bien 4*10 - 5 = 40 - 5 = 35

et

9x = 27

9x/9 = 27/9

x = 3

on a bien 9*3 = 27

Réponse :

A) 4x - 5 = 35

4x = 35 + 5

4x = 40

4x ÷ 4 = 40 ÷ 4

x = 10

B) 9x = 27

9x ÷ 9 = 27 ÷ 9

x = 3

Explications étape par étape

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