tentukan nilai x pada gambar diatas ya kak thx ya kak

a. 2x+ 3x + x = 90
6x = 90
x = 15

b.6x + 14x =90
10x = 90
x = 9

c. 2x + 5x + 2x = 90
9x = 90
x = 10
d. b + 37 = 90
b = 90- 37
b = 53

Semua soal diatas adalah sudut siku²
sudut siku²=90°

a. 2x+3x+x=90°
6x = 90°
x = 90/6 =15°
b. 6x+14x = 90°
20x = 90°
x = 90/20 =4,5°
c. 2x+5x+2x = 90°
9x = 90
x = 90/9 =10°
d. b°+ 37 =90°
b° = 90-37 =53°