No:16 Besar pelurus sudut SQR adalah......

180= 5x+4x+9
171 =9x
x= 19


SQR =4(19) + 9
=85 derajat

Seharusnya jawaban 85 derajat :)

(5x)° + (4x + 9)° = 180°
9x + 9 = 180
9x = 180 - 9
9x = 171
x = 171 : 9
x = 19

pelurus sudut SQR = SQP

SQP = [5x]°
SQP = [5 . 19]°
SQP = 95°

semoga membantu...