Question

Geometry math question no Guessing and Please show work

Answer 1

As we know that remote exterior angle can be given by

m<z=m<x+m<y

151-5n=4n-18+n+9

151+18-9=5n+4n+n

160=10n

n=16

m<z=151-5*16

m<z=151-80=71