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Sagot :

a. 4 x (2+9) = 44
b. (15-3) x 2 = 24
c. (5+5) x (5-5) = 0
d. 1 + 13 - (14-7) = 7
e. 7 + (7+6) x 7 = 98
f. 2 x (5-2) x (4+1) = 30

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