On pose a = 1 , b= 3/7 et c = 1/21 .
calculer sous forme fractionnaire :
A= a+c , B= c-b , C a-b-c.
calculer sous forme fractionnaire :
A= a+c , B= c-b , C a-b-c.
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BonjourA = a + c
A = 1 +1/21 = 21/21 + 1/21 = 22/21
B = c - b
b = 1/21 - 3/7 = 1/21 - 9/21 = - 8/21
C = a - b - c
c = 1 - 3/7 - 1/21 = 21/21 - 9/21 - 1/21 = 11/21