The sum of 14 and a number is equal to 17

Klein read 30 pages of a book on monday and 1/8 of the book on tuesday. he completed the remaining 1/4 of the book on wendesday. how many pages are there in the book?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Find the least common denominator for thesetvo rational expressions. n^2/n^2+4n+4 -3/n^2+7n+10