:: 4C21 - Additionner ou soustraire deux fractions - 5 questions ::
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{
=%100%100|*=%90%90|*=%80%80|*=%75%75|*=%66.66667%66.666|*=%60%60|*=%50%50|*=%40%40|*=%33.33333%33.333|*=%30%30|*=%25%25|*=%20%20|*=%16.66667%16.666|*=%14.28571%14.2857|*=%12.5%12.5|*=%11.11111%11.111|*=%10%10|*=%5%5|*=%0%0|*
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