118 Сократи дроби с натуральными числителями и знаменателями: 1) 3*5*28/15*49; 2) 12abd/8bdx; 3) m^2n/6mn; 4) 29*38-29*23/29*60; 5) 3x+3y/21y

1) \(\frac{3\cdot5\cdot28}{15\cdot49}\) = \(\frac{3\cdot5\cdot4\cdot7}{3\cdot5\cdot7\cdot7}\) = \(\frac{4}{7}\) 2) \(\frac{12abd}{8bdx}\) = \(\frac{4\cdot3\cdot a\cdot b\cdot d}{4\cdot2\cdot b\cdot d\cdot x}\) = \(\frac{3a}{2x}\) 3) \(\frac{m^2n}{6mn}\) = \(\frac{m\cdot m\cdot n}{6\cdot m\cdot n}\) = \(\frac{m}{6}\) 4) \(\frac{29\cdot38-29\cdot23}{29\cdot60}\) = \(\frac{29\cdot(38-23)}{29\cdot60}\) = \(\frac{29\cdot15}{29\cdot60}\) = \(\frac{15}{60}\) = \(\frac{1}{4}\) 5) \(\frac{3x+3y}{21y}\) = \(\frac{3(x+y)}{21y}\) = \(\frac{x+y}{7y}\) Ответ: 1) 4/7; 2) 3a/2x; 3) m/6; 4) 1/4; 5) (x+y)/7y