Tolong jawab ya pls waktu terbatas

(2p+6) + (3p-6) = 180°
2p+3p+6-6 = 180°
5p = 180°
p = 180° : 5
p = 36°

<SQR = 3p-6
= 3(36)-6
= 108-6
= 102°

<QRS atau <R = 180°-(<SQR+<QSR)
= 180°-(102°+36°)
= 180°-138°
= 42°