tolong jawab.....................
Penjelasan dengan langkah-langkah:
no 1
2x+10 + x-10 = 180
3x = 180
x = 60
no 2
2a+a = 180
3a = 180
a = 60
7x = a = 60
x = 60/7
no 3
2x - 52 + 171 - x = 180
x + 119 = 180
x = 61
no 4
4x + 15 + 5x + 42 = 180
9x + 57 = 180
9x = 123
x = 123/9
x = 41/3
[answer.2.content]
