Question

сократите дробь 20/45;12/72;136/170,21/108;24/36;15/35/102/136;90/126;3/39;36/63/21/84;151/302;130/182;490/560;10/75. помогите пожалуйста!!!

Answer 1

20/45=4/912/72=1/3136/170=4/521/108=7/3624/36=2/315/35/102/136=3/7/51/68=3*68/7*51=68/7*17=68/119=4/790/126=5/73/39=1/1336/63/21/84=4/7/1/4=4/7*4/1=2  2/7151/302=1/2130/182= 5/7490/560=7/810/75= 2/15