Réponse:
5/8+7/6= 5×6/8×6+7×8/6×8 = 30/48+56/48=86/48= 86÷2/48÷2= 43/24
5/8+-8/3= 5×3/8×3+-8×3/3×8 =15/24+ -24/24= 15+(-24)/24=-9/24= -3/8
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Réponse:
5/8+7/6= 5×6/8×6+7×8/6×8 = 30/48+56/48=86/48= 86÷2/48÷2= 43/24
5/8+-8/3= 5×3/8×3+-8×3/3×8 =15/24+ -24/24= 15+(-24)/24=-9/24= -3/8