Question

Muteki no egao de arasu media
Soal ada di gambar​

Answer 1

PEMBAHASAN

2y + 3y = 180°

5y = 180°

y = 180°/5

y = 36°

7x + 5x = 180°

12x = 180°

x = 180°/12

x = 15°

x + y

= 15° + 36°

= 51°