Сложите дроби, предварительно сократив их: Образец 6/15+5/25=3*2/5*3+5*1/5*5=2/5+1/5=3/5. б). 10/16+3/24; в). 30/45+8/36;

б). 10/16 + 3/24 = 5 * 2 / 2 * 8 + 3 * 1 / 3 * 8 = 5/8 + 1/8 = 6/8 = 3/4;в). 30/45 + 8/36 = 5 * 6 / 5 * 9 + 2 * 4 / 4 * 9 = 2/3 + 2/9 = (2 * 3 + 2 * 1)/9 = (6 + 2)/9 = 8/9;г). 60/120 + 75/150 = 60 * 1 / 60 * 2 + 25 * 3 / 25 * 6 = 1/2 + 1/2 = 1;д). 24/360 + 16/480 = 6 * 4 / 6 * 60 + 16 * 1 / 48 * 10 = 1/15 + 3/10 = (1 * 2 + 3 * 3)/30 = (2 + 9)/30 = 11/30.