Bonsoir,
a. 1/11 + 5/11 = 6/11
b. 4/5 - 7/5 = -3/5
c. -5/9 + 1/9 = -4/9
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Bonsoir,
a. 1/11 + 5/11 = 6/11
b. 4/5 - 7/5 = -3/5
c. -5/9 + 1/9 = -4/9