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Sagot :

Réponse:

Oui

Explications étape par étape:

(2/5+1/3)*5/3=

(6/15+5/15)*5/3=

11/15*5/3=

55/44=

11/9

18/12-16/18*3/8=

18/12-48/144=

216/144-48/244=

168/144=

7/2

(3/7-2)*(1/2+5/4)=

(23/7-14/7)*7/4=

-11/7*7/4=

-11/4

7*(1/2+2/3+3/4+4/5+5/6+6/7)=

7*(720/5040)=

5040/5040=1

Réponse:

A= ( 2/5 + 1/3 )* 5/3

A= ( 2*3-1*5/5*3)* 5/3

A=(6+5/15) * 5/3

A= 11/15 *5/3

A= 11*5/15*3

A = 55/45

A= 55÷5/45÷5

A= 11/9

B= 18/12-16/18× 3/8

= 18/12-16*3/18*8

= 18/12-48/94

= 18/12-24/47

= (18*47)-(24*12)/ 12*47

= 846-48/564

= 798÷3/564÷3

= 266÷ 2/188÷2

B = 133/94

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