Janet, you have to work from the inside first. (1-1/10) = (9/10). Then 1/(9/10) = 10/9. Then 10/9-1 = 1/9. Then 3 times 1/9 = 1/3. Spongebob, you can't solve that by factoring into 5 and 29. You can use the quadratic formula to get answers close to 13.6 and -10.6.