Сократите пж дроби пжжжж срочно
Д)42/49=6/7, 40/72=5/9, 56/64=7/8, 21/91=3/13, 36/81=4/9, 54/63=6/7, 18/38=9/19, 15/51=5/17, 57/76=3/4, 60/96=5/8, 4/6=2/3, 42/78=7/13, 39/91=3/7, 12/52=3/13