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A = 3/4 + 5/6

 = 18/24 + 20/24 = 38/24 = 19/12

B = ( 4/6 - 3 /6 ) ²  = ( 1/6 ) ² = 1/36

C = ( 4/4 - 1/4 ) : ( 4 /4 + 1/4 ) = 3/4 x 4/5 = 12/20 = 3/5

NAG

Réponse :

A=3/4+1/3x 5/2

A=3/4+5/6

A=9/12+10/12

A=19/12

B=(2/3-1/2)²

B=(24/6-3/6)²

B=21/6²

B=21/6 x 21/6

B=12.25

C=[tex]\frac{1-\frac{1}{4} }{1+\frac{1}{4} }[/tex]

C=(4/4-1/4)/(4/4+1/4)

C=3/4 / 5/4

C=3/4 x 4/5

C=3/5

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