Alg & Trig 2
posted by Tiffany .
find the sum of 1/2, 2/7x, and 5/x

Find the least common denominator by multiplying the prime factors, 7 and 2, and x to get 14x. Multiply each fraction by 7x, 2, and 14 respectively so that they share the denominator 14x. Add the numerators to get (7x+74)/14x. Simplify 7x/14x to 1/2 and 74/14x to 37/7x to get (1/2) + (37/7x)