Вопрос по математике:

Вычислите произведение а)15/49*14,б)11/36*27,в)18*13/48,г)24*35/56,д)25*7/30,е)32*11/48,ж)13/15*6,з)7/20*15

а). 15/49 * 14 = 15 * 14 / 49 = 210/49 = 30/7 = 4 2/7;б). 11/36 * 27 = 11 * 27 / 36 = 297/36 = 33/4 = 8 1/4 = 8.25;в). 18*13/48 = 18 * 13 / 48 = 234/48 = 39/8 = 4 7/8 = 4,875;г). 24 * 35/56 = 24 *35 / 56 = 840/56 = 15;д). 25 * 7/30 = 25 * 7 / 30 = 175/30 = 35/6 = 5 5/6;е). 32 * 11/48 = 32 * 11 / 48 = 352/48 = 22/3 = 7 1/3;ж). 13/15 * 6 = 13 * 6 / 15 = 78/15 = 5 3/15 = 5 1/3;з). 7/20 * 15 = 7 * 15 / 20 = 105/20 = 21/4 = 5 1/4 = 5,25;