tolong bantu soal nomor 7 pake caranya yaaa??....

<TPQ = <TQR = 45 (karena persegi)
90 = 2x +3 + y + 17
2x + y = 70
x + y = 70-x
2x+3 = 45
2x = 42
x = 21
y+17 = 45
y = 28
x+y = 70-x = 70-21 = 49
21+28 = 49