one less than the reciprocal of a number is 9. what is the number?
1 / x - 1 = 9
Add 1 to both sides
1 / x - 1 + 1 = 9 + 1
1 / x = 10
Take the recoprocal of both sides
x = 1 / 10
Add 1 to both sides
1 / x - 1 + 1 = 9 + 1
1 / x = 10
Take the recoprocal of both sides
x = 1 / 10