exercice svp urgent
a.7sur5-9sur5
b.-3sur8+7sur8
c.4sur15- -2sur15
svp les explication psq j'ai pas comprie
merciiii
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exercice svp urgent
a.7sur5-9sur5
b.-3sur8+7sur8
c.4sur15- -2sur15
svp les explication psq j'ai pas comprie
merciiii
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7/5-9/5 = (7-9)/5 = -2/5
b)
-3/8+7/8 = (-3+7)/8 = 4/8 = 1/2
c)
4/15-2/15 = (4-2)/15 = 2/15