Question

If one angle in a pair of vertical angles measures 42 degrees and the other measures 2n-4 degrees, which is the value of n?
I got 23 degrees but I am not sure if it is correct. Please help me...

Answer 1

2n-4 = 42
2n = 46
n = 23

you are correct

Answer 2

So, you would set up your equation as 2n - 4 = 42.

2n - 4 = 42
+4 +4 Add 4 to each side
2n = 46
2n/2 = 46/2 Divide by the coefficient on each side
n = 23 Solve

You're correct