10 1/7:1 1/7 - 1 1/7y + 2 5/8 = 7 1/8 71/7 - 1 1/7y = 57/8 - 21/8 71/7 - 1 1/7y = 36/8 71/7 - 1 1/7y = 9/2 1 1/7y = 71/7 - 9/2 1 1/7y = 142/14 - 63/14 1 1/7y = 79/14 8/7y = 79/14 y = 79/14 *7/8 y = 79/16 y = 4 15/16