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Sagot :

MITCHALEXANDRINE2314

3/4+(-1/4)=1/2

-1/4+2=7/4

1/2+7/4=9/4

Donc :

9/4

1/2. 7/4

3/4. -1/4. 2

[tex] \frac{3}{4} - \frac{1}{4} = \frac{3 - 1}{4} = \frac{2}{4} = \frac{1}{2} [/tex]

[tex] \frac{ - 1}{4} + 2 = \frac{ - 1}{4} + \frac{8}{4} = \frac{7}{4} [/tex]

[tex] \frac{1}{2} + \frac{7}{4} = \frac{2}{4} + \frac{7}{4} = \frac{9}{4} [/tex]

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