[tex]\huge \color{pink} \boxed{x = 56 }[/tex]
Step-by-step explanation:
[tex]\\ \\ \large\color{lime}\boxed{Given \: Question↣ \: by \: angle \: theorem \: find \: the \: value \: of \: x} \\ \\ \large\sf {triangle \: angle \: sum \: states \: that \: the \: three \: interior \: angles \: of \: any \: triangle \: add \: up \: to \: 180 \: degrees. \: } \\ \\ \large \sf{equation↣31 + 37 + 2x = 180}\\ \\ \large \sf{lets \: solve↣} \\ \\ \large \sf{⇒ \: 68 + 2x = 180}\\ \\ \large \sf{⇒2x = 180 - 68}\\ \\ \large \sf{⇒2x = 112}\\ \\ \large\sf{⇒x=\cancel\frac{112}{2}}\\\\ \large \sf{⇒x = 56}[/tex]
[tex] \\ \\ [/tex]
[tex]\large\color{cyan}{\boxed{\mathfrak{❥\:Glossy\:Pearl}}}[/tex]
