beatrizpenaloza92 beatrizpenaloza92 31-03-2020 Mathematics contestada Find the least common denominator for the following rational expressions. 18/r- 4, -5r/r^-5r+4, r+7/r^-4r-5 o (1-1)(r – 4)(r-5) o (r - 1)(r + 4)(r-5) 0 (-1)(r+ 1)(r-4)(r-5) (r- 1)(r+ 1)(r + 4)(-5)
