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Sagot :

MITCHALEXANDRINE2314

5-X=12

(-X)=12-5

(-X)=7

X=-7

-5X=14

-5X÷5=14÷5

(-X)=2,8

X=-2,8

13-3X=-25

-3X=-25-13

-3X=-38

-3X÷-3=-38÷-3

X=-38/3

13X+13=1-13

13X+13=-12

13X=-12-13

13X=-25

13X÷13=-25÷13

X=-25/13

8X-4=60

8X=60+4

8X=64

8X÷8=64÷8

X=8

2X+24=60

2X=60-24

2X=36

2X÷2=36÷2

X=18

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