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Sagot :

Réponse:

1)t>13

t+2>13+2

t+2>15

2)t>13

t+7/5>13+7/5

7/5+t>(65+7)/5

7/5+t>14

3)t>13

t-3/2>13-3/2

t-3/2>(26-3)/2

t.3/2>11.5

4)t>13

t+(-7)>13+(-7)

-7+t>13-7

-7+t>6

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