pliss jwb ini 1 sampai 5

1. 2a + 7 = 19
2a = 19 - 7
a = 12
2. 8a - 3a = 12
5a = 12
a = 12/5
3. 2x - 15 = x + x - 5
2x - 15 = 2x - 5
2x - 2x = - 5 + 15
10
4. x + 2 = 7 + 4x
x - 4x = 7 - 2
- 3x = 5
x = - 5/3
5. 4 - 3y = 11 - 3y
- 3y + 3y = 11 - 4
7

MAAF KALO SALAH