Question 760489
Complementary angles = 90 degrees
So (5x + 1) + (15x - 7) = 90
    5x + 1 + 15x - 7 = 90
      Collect like terms
  Change sign as you cross the =
              20x = 90 + 6
              20x = 96
                x = 96/20
                x = 4.8.
 5x + 1 = 25 degrees
15x - 7 = 65 degrees
      Total 90 degrees