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Sagot :

Bonsoir,

B)

2/3 -20/6=

2/3 -10/3 = -7/3

C)

5+ [(8/8 +1/8) ]/3/4 =

5+(9/8)/3/4=

5+ 9/8 * 4/3 =

5+ 36/24 =

5+ 18/12 =

5+ 9/6=

5+ 3/2 =

10/2 +3/2 = 13/2

Réponse :

J'espère que je t'aurai bien détaillé le calcul

Explications étape par étape

B = 2/3 - 4/3 x 5/2 = 2/3 - 20/6 = 4/6 - 20/6 = - 16/6 = 8/3

C = 5 + (1 + 1/8) / 3/4 = 5 + ( 8/8 + 1/8 ) / 3/4 = 5 + 9/8 / 3/4 =  5 + 9/8 x 4/3 = 5 + 36/24 = 5 + 3/2 = 13/2

B = 8/3

C = 13/2

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