Find angle x if m∠x=(197−5n)°, m∠y=(6n+22)°, and m∠z=(n+7)°
angle(x) = angle(y) + angle(z)
197 - 5n = ( 6n + 22 ) + ( n + 7 )
197 - 5n = 7n + 29
168 = 12n
n = 14
you get to finish ........
