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Sagot :

Bonjour,

A=120-15x(21-18)

A = 120 - 15 x 3

A = 120 - 45

A = 75

B=7X(11-(3+4))

B = 7 x (11 - 7)

B = 7 x 4

B = 28

C=(43+67)x(( 12-10)x2+16)

C = 110 x (2 x 2 + 16)

C = 110 x (4 + 16)

C = 110 + 20

C = 2 200.

D- mal posée

Réponse:

A. 120-15×(21-18)

A.120-(15×21-15×18)

A.120-(315-270)

A.120-45

A.75

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