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(1,75- 1/6)-(0,25+1/3)= 1
1)1,75 - 1/6 = 1 75/100 - 1/6= 7/4 - 1/6 = (7 × 3 - 1 × 2)/12 = 21/12 - 2/12 = 19/12 = 1 7/12
2)0,25 + 1/3 = 1/4 + 1/3 =(1 × 3 + 1 × 4)/12 = 3/12 + 4/12 = 7/12
3)1 7/12 - 7/12 = 19/12 - 7/12 = 12/12 = 1
1)1,75 - 1/6 = 1 75/100 - 1/6= 7/4 - 1/6 = (7 × 3 - 1 × 2)/12 = 21/12 - 2/12 = 19/12 = 1 7/12
2)0,25 + 1/3 = 1/4 + 1/3 =(1 × 3 + 1 × 4)/12 = 3/12 + 4/12 = 7/12
3)1 7/12 - 7/12 = 19/12 - 7/12 = 12/12 = 1
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