Найти значение выражений: 1/2+1/4+1/8; 1/3+1/6+1/18; 1/20+1/4+2/5; 1/12+1/6+3/4; 1/2+1/3+1/4; 1/2+1/3+1/5
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Ответы на вопрос:
а) 1: 3+1: 6+1: 18 = 6: 18+3: 18+1: 18 = 10: 18 = 5: 9.
б) 1: 20+1: 4+2: 5 = 1: 20+5: 20+8: 20 = 14: 20 = 7: 10.
в) 1: 12+1: 6+3: 4 = 1: 12+2: 12+9: 12 = 12: 12 = 1.
г) 1: 4+2: 25+3: 100 = 25: 100+8: 100+3: 100 = 36: 100 = 9: 25.
2) 1: 3; 1: 6; 1: 3 + 1: 6 = 2: 6 + : 6 = 3: 6 = 1/2.
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