What is the least common multiple of 10 15 25

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.

Which of the following is the sum of 3 1/6 + 6 3/8?