Answer:
x=-7
Step-by-step explanation:
[tex]We\ are\ given\ that,\\Angle\ 1 =72+x\\Angle\ 2=x+122\\Hence,\\We\ observe\ that\ Angle\ 1\ and\ Angle\ 2\ are\ co-interior\ angles\ ; and\ as\ the\ lines\ are\ parallel\ \\They\ are\ supplementary.\\Hence,\\Angle\ 1\ +\ Angle\ 2\ =180\\(72+x)+(x+122)=180\\2x+194=180\\2x=180-194\\2x=-14\\x=-14/2\\x=-7[/tex]
