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Sagot :

bjr

2/7 × x = 1

x = 7/2

-5/3 × x = 1

x = 3/-5

x × - 3 = 1

x = 1/-3

bonne soirée

MITCHALEXANDRINE2314

A)2/7×X=1

2/7X=1

X=1÷2/7

X=1×7/2

X=7/2

B)-5/3×X=1

-5/3X=1

X=1÷-5/3

X=1×-3/5

X=-3/5

C)X×(-3)=1

-3X=1

-3X/-3=1/-3

X=-1/3

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