Помогите!!! Сократите дроби: б)42/720,75/300,40/64,3/243,18/300,45/900,120/180
42/720=1/20 75/300=1/4 40/64= 5/8 3/234= 1/81 18/300=3/50 45/900=1/20 120\180=2/3