tolong jawab y cepat

1) 4X = X+3
    4X-X = 3
    3X = 3
    X = 3/3
    X = 1
2) 2X+15 = 27-4X
    2X+4X = 27-15
    6X = 12
    X = 12/6
    X = 2
3) X+3 = 7-X
    X+X = 7-3
    2X = 4
    X = 4/2
    X = 2
Maaf kalo salah