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Sagot :

Bonsoir,

A= 2+20 = 22

B= -6 +9 = 3

C= 25/ 5 = 5

A= 6/9 + 4/9 = 10/9

B= 8/40 + 25/40 = 33/40

C= 80/80 + 2 = 1+2 = 3

D= 6/5 * 10/12  -1/4 = 60/60 -1/4

= 1 -1/4 = 4/4 -1/4 = 3/4

WSMORAG78

Explications étape par étape:

A 2+4×5

A=2+20

A=22

B= -3×2+9

B= -6+9

B=3

C=25÷(8-13)

C= 25÷(-5)

C=-5

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