10 is an answer to the equation.
Work Step by Step
Solve for n in the equation. n+20 = 4n -10 n + 20 = 4n - 10 +10 +10 n+30=4n -n -n 30=3n Divide both sides by 3 to isolate the variable. 30/3 = 3n/3 10 = n The set of potential answers includes 10. This is the answer. You can also plug in 0 and 20 to double-check. Of the 3 solutions, only 10 satisfies the equation.