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Sagot :

VINS

bonsoir

x

- 4 x

- 4 x - x

- 3 (- 5 x ) = 15 x

si on prend  2 on a  15 *  2 = 30

si on prend - 6 =  - 6 * 15 = - 90

a)
1. 2
2. 2*(-4)
3. -8-2
4. -10*(-3)
5. 30

b)
1. -6
2. -6*(-4)
3. 24-(-6)
4. 30*3
5. 90

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