Прошу помогите с примерами(дроби): (1/2+1/3)*5= (1/2+1/3)*2= (4/3+1/6)*4= (1/2-1/3)*3= (5/6-1/4)*7= Прошу помогите, примера

1) (1/2 + 1/3) * 5 = (1 * 3 + 1 * 2)/6 * 5 = (3 + 2)/6 * 5 = 5/6 * 5 = 25/6;2) (1/2 + 1/3) * 2 = (3 + 2)/6 * 2 = 5/6 * 2 = 5/3 * 1 = 5/3;3) (4/3 + 1/6) * 4 = (4 * 2 + 1 * 1)/6 * 4 = (8 + 1)/6 *4 = 9/6 * 4 = 3/2 * 4 = 3/1 * 2 = 3 * 2 = 6;4) (1/2 - 1/3) * 3 = (1 * 3 - 1 * 2)/6 * 3 = (3 - 2)/6 * 3 = 1/6 * 3 = 1/2 * 1 = 1/2; 5) (5/6 - 1/4) * 7 = (5 * 2 - 1 * 3)/12 * 7 = (10 - 3)/12 * 7 = 7/12 * 7 = 49/12.