Answer:

7. Supplementary = [tex]104^{\circ}[/tex]

8. Complementary = [tex]14^{\circ}[/tex]

Step-by-step explanation:

Supplementary angles that the sum of two angles are equal to [tex]180^{\circ}[/tex].

[tex]180^{\circ}=76^{\circ}+x^{\circ}\\x^{\circ}=180^{\circ}-76^{\circ}\\x^{\circ}=104^{\circ}[/tex]

Complementary angles that the sum of two angles are equal to [tex]90^{\circ}[/tex].

[tex]90^{\circ}=76^{\circ}+x^{\circ}\\x^{\circ}=90^{\circ}-76^{\circ}\\x^{\circ}=14^{\circ}[/tex]