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Sagot :

Bon jour,

W= 3/4 - (-5/12 - 1/3) + ( -2 - 1/6)

3/4 -( -5/12 - 4/12) -2 +1/6=

9/12 -( -5/12 - 4/12) -24//12 +2/12=

9/12 +5/12 +4/12/ -24//12 +2/12= -4/12 = -1/3

X = 7/8 - ( - 1/4 + -7/2) + 3/16​

si + 7/2

14/16 +4/16 -  56/16+3/16 =    -35/16

Si  -7/2

14/16 +4/16 +  56/16+3/16  = 77/56

Réponse :

Bonjour

Explications étape par étape

W= 3/4 - (-5/12 - 1/3) + ( -2 - 1/6)

W = 3/4 - (-5/12 - 4/12) + ( -12/6 - 1/6)

W = 3/4 - ( - 9/12) + ( - 13/6)

W = 3/4 + 9/12 - 13/6

W = 9/12 + 9/12 - 26/12

W = -8/12

W = -2/3

X = 7/8 - ( - 1/4 + -7/2) + 3/16

X = 7/8 - ( -1/4 - 14/4) + 3/16

X = 7/8 + 15/4 + 3/16

X = 14/16 + 60/16 + 3/16

X = 77/16

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