tolong dijawab no 20 dan 21 yaaa!!

2x + 5 + 3x -25 = 180
2x + 3x + 5 - 25 =180
5x - 20 = 180
5x = 180 + 20
x = 200/5
x = 40

substitusi x = 40

2x + 5
2(40) + 5
80 + 5
= 85

semoga bermanfaat