Angle e and angle f are vertical angles if measure angle e equals 17x + 1 and measure angle f equals 20x - 14, find measure angle f

Basically since Angle E and F are vertical angles, you can set up these two like an equation.

So 17x+1 = 20x-14

1=3x-14

15=3x

x=5

So now take x=5 and plug it in for angle F since you need to find Angle F, which will be 20(5)-14

100-14

Angle F = 86°