Respuesta :

1)

[tex]180 - 138[/tex] (Reason- LINEAR PAIR)

[tex]42[/tex]

2)

[tex]138 + x = 180[/tex] (Reason- Co-interior angles are supplementary)

[tex]x = 180 - 138[/tex]

[tex]x = 42[/tex]

Hope it helps you.

it’s (a) 42°



hope it helps!!! have a great day <33