Jawaban:
A. 180°
Penjelasan dengan langkah-langkah:
[tex]3x - 20 = 4x - 50 \\ 3x - 4x = - 50 + 20 \\ - x = - 30 \\ x = 30[/tex]
[tex]5x + 30 = (5 \times 30) + 30 = 150 + 30 = 180[/tex]
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Jawaban:
A. 180°
Penjelasan dengan langkah-langkah:
[tex]3x - 20 = 4x - 50 \\ 3x - 4x = - 50 + 20 \\ - x = - 30 \\ x = 30[/tex]
[tex]5x + 30 = (5 \times 30) + 30 = 150 + 30 = 180[/tex]