Pertanyaan :
Jawaban :
3.
2x + 2x – 20 = 180
4x = 180 + 20
4x = 200
x = 50
2x + 2x – 20 = 180
4x = 180 + 20
4x = 200
x = 50
4.
2x – 10 + 110 = 180
2x + 100 = 180
2x = 180 – 100
2x = 80
x = 40
∠ C = 3x – 10
= 3(40) – 10
= 120 – 10
= 110
smoga brmnfaat 🙂
jdikan jwban trbaik ya..