tolong ya nomor 2 3 4 5

2.
3(x + 2) - 5x - 5 = 3x + 6 - 5x - 5
= (3x - 5x) + (6 - 5)
= -2x + 1 (B)

3.
2(3x + 1/4) = 5(2x - 1/6)
6x + 1/2 = 10x - 5/6
1/2 + 5/6 = 10x - 6x
3/6 + 5/6 = 4x
8/6 = 4x
4/3 = 4x
x = 1/3 (B)

4.
1/4(x - 10) = 2/3x - 5
1/4x - 5/2 = 2/3x - 5
1/4x - 2/3x = -5 + 5/2
3/12x - 8/12x = -10/2 + 5/2
-5/12x = -5/2
1/6x = 1
x = 6 (D)

5.
3(x + 2) + 5 = 2(x + 15)
3x + 6 + 5 = 2x + 30
3x + 11 = 2x + 30
3x - 2x = 30 - 11
x = 19

x + 2 = 19 + 2 = 21 (B)