70° + sudut siku-siku + 2x° = 180°
70° + 90° + 2x° = 180°
160° + 2x° = 180°
2x° = 180° - 160°
2x° = 20°
x° = 20°/2
x° = 10°
x = 10
===
Jawaban:
Penjelasan dengan langkah-langkah:
180 = 7x+ 2x + 90
180 = 9x + 90
- 9x = - 90
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70° + sudut siku-siku + 2x° = 180°
70° + 90° + 2x° = 180°
160° + 2x° = 180°
2x° = 180° - 160°
2x° = 20°
x° = 20°/2
x° = 10°
x = 10
===
Jawaban:
x = 10
Penjelasan dengan langkah-langkah:
180 = 7x+ 2x + 90
180 = 9x + 90
- 9x = - 90
x = 10
________________________