Tolong jawab ini ya?

Tolong jawab ini ya?

17. 3p – 26° = p + 78°
3p – p = 78° + 26°
2p = 104°
p = 104° : 2 = 52°

18. x + y = 105°
$2 frac{1}{2}y + y = {105}^{0} \ 3 frac{1}{2}y = {105}^{0} \ frac{7}{2}y = {105}^{0} \ y = {105}^{0} div frac{7}{2} \ = {105}^{0} times frac{2}{7} \ = {30}^{0}$
$x = 2 frac{1}{2}y \ = 2 frac{1}{2}( {30}^{0}) \ = {75}^{0}$