Soal matematikaplis dibantuu​

Jawaban:

2x + 5 + 3x – 10 = 180

2x + 3x + 5 – 10 = 180

5x – 5 = 180

5x = 180 + 5

5x = 185

x = 185 ÷ 5

x = 37 (A.)

Sudut ABD = 2x + 5

= 2 (37) + 5

= 74 + 5

= 79 (C.)