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Sagot :

Bonsoir,

 7        -1        12        3/4

-2       -12       -35       -7/5

6,8      -13,2     -32       -0,32

-2,6      1,4         1,2       0,3

Pense aux règles des signes, sommes et produits

CFVR

Réponse:

1 ) A + B = 3 + 4 = 7

A - B = 3 - 4 = -1

A × B = 3 × 4 = 16

A / B = 3 / 4

2 ) A + B = -7 + 5 = -2

A - B = -7 - 5 = - 12

A × B = -7 × 5 = -35

A/B = -7/5

3) A + B = -3.2 + 10 = 6.8

A - B = -3.2 - 10 = -13.2

A × B = -3.2 × 10 = -32

A / B = -0.32

4 ) A + B = -0.6 + - 2 = -2.6

A - B = -0.6 + 2 = 1.4

A × B = -0.6 × -2 = -1.2

A/B = -0.6 / -2 = 0.3

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