Mary bought 7/2m of lace. if she used 7/4of her new dress,how much lace is left with her ?
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7+7 = Lcm of 2 and 4 = 4
7+7 = Lcm of 2 and 4 = 4 2 4
7×2 7×1 = 14 - 7 = 7
7×2 7×1 = 14 - 7 = 72×2 4×1 4 4
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