Question 106279
A number that is 38 less than its opposite.
Let n be the number. The opposite of n is -n and 38 less than that is (-n-38), so...
n = -n-38 Simplify and solve for n.
2n = -38  Divide both sides by 2.
n = -19 This is the number.

Check:
-19 = 19-38
-19 = -19 OK