Let ,
130° + y = 180° — ( i )
x + 107° + y = 180° — ( ii )
now ( i )
130° + y = 180°
y = 180° - 130°
y = 50°
now substituting value of y in equation ( i )
[tex]x + 107 + y = 180 \\ x + 107 + 50 = 180 \\ x + 157 = 180 \\ x = 180 - 157 \\ [/tex]
x = 23°
