tolong bantuin ya nomor 1 dan 2

1.) 5x+(4x+9)= 180°
9x + 9 = 180°
= 180° - 9
9X = 171°
x = 171 / 9
× = 19°

SQR = (4(19)+ 9
= 85°




2.) a . (3x+15)+(2x+10) = 180°
= 5× + 25 = 180°
= 5× = 180° - 25
x = 155/ 5
x = 31°

2.) a.) M = 2(31+10) < KLN = 3(31+15)
= 72° < = 108°
= 180° - 72° < 180° - 108°
= 118° < 72°

b.) KLN 3(31+15)
= 108°
= 108° - 180°
= 72°



maaf kalo ada yang salah