10 1/2x = 132 21/2х = 132 x = 132 : 21/2 x = 132 * 2/21 x = 44/1 * 2/7 x = 88/7 x = 12 4/7 10 1/2 * 12 4/7 = 21/2 * 88/7 = 3/1 * 44/1 = 132