Răspuns:
Explicație pas cu pas:
125/375 = 5/15 = 1/3
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100/124 = 25/31
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801/810 = 89/90
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99/121 = 9/11
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121/1331 = 11/121 = 1/11
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360/117 = 40/13
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450/850 = 9/17
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1024/512 = 2