Tlong tlong tlong tlong tlong​

2x+5°+3x+15°=180°

5x+20°=180°

5x=180°-20°

5x=160°

x=32°

<BAD

2x+5°

2(32)+5°

64°+5°

69° (B)

Jawaban:

B. 69°

Penjelasan dengan langkah-langkah:

2x + 5 + 3x + 15 = 180

5x + 20 = 180

5x = 180-20= 160

x = 160 : 5 = 32

sudut BAD = 2x + 5 = (2×32)+5 = 64+5= 69°