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