Answer:[tex]m\angle ABC=35\degree[/tex]Step-by-step explanation:Corresponding angles are congruent.Use this property to write the equation;[tex](3x-70)\degree=x\degree[/tex]Group similar terms;[tex]3x-x=70[/tex]Simplify;[tex]2x=70[/tex][tex]\Rightarrow x=35[/tex][tex]m\angle ABC=x\degree[/tex], corresponding angles are equal[tex]m\angle ABC=35\degree[/tex]