tolong jawab pertanyaan nomor 25 berserta caranya,terimakasih banyak :)

[tex]12x + 108 = 180 \\ 12x = 180 - 108 \\ 12x = 72 \\x = \frac{72}{12} \\ x = 6 \\ \\ 5x + 2y + 56 = 180 \\ 5 \times 6 + 2y + 56 = 180 \\ 30 + 2y + 56 = 180 \\ 2y = 180 - 30 - 56 \\ 2y = 94 \\ y = \frac{94}{2} \\ y = 47 \\ \\1 2x + 56 + 4z = 180 \\ 12 \times 6 + 56 + 4z = 180 \\ 72 + 56 + 4z = 180 \\ 128 + 4z = 180 \\ 4z = 180 - 128 \\ 4z = 52 \\ z = \frac{52}{4} \\ z = 13 \\ \\ x + y + z \\ = 6 + 47 + 13 \\ = 66[/tex]


Jadi, jawabannya A. 66°