а) 7/11 и 13/33 =7/11× 3 =21/33 и 13/33
б) 1/9 и 5/7 = 1/9×7 и 5/7 × 9= 7/63 и 45/63
с)11/14 и 5/42 = 11/14 ×3 и 5/42 = 33/42 и 5/42
а) 7/11 и 13/33 =7/11× 3 =21/33 и 13/33
б) 1/9 и 5/7 = 1/9×7 и 5/7 × 9= 7/63 и 45/63
с)11/14 и 5/42 = 11/14 ×3 и 5/42 = 33/42 и 5/42