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Sagot :

Bonjour

1) x÷4 + 13

2) x ÷ 4 +13 = 20

x ÷ 4 = 20-13

x ÷ 4 = 7

x = 7*4

x = 28

1) (x + 4 )÷13

2) (x+4)÷13 = 20

x + 4 = 20*13

x + 4 = 260

x = 260-4

x = 256

bonne journée

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