mohon bantuannya kakak....
Jawaban:
a. x = 4
b. Penyiku = 55°
Penjelasan dengan langkah-langkah:
a.
[tex]90 = 10 x - 10 - x + 29 + 9x - 1 \\ 90 = 18x - 18 \\ 90 - 18 = 18x \\ 72 = 18x \\ x = \frac{72}{18} \\ x = 4[/tex]
b.
[tex]9x - 1 + n = 90 \\ 9(4) - 1 + n = 90 \\ 36 + n = 90 + 1 \\ 36 + n = 91 \\ n = 91 - 36 \\ n = 55[/tex]
Report kalau salah.
