1). 5x+2=12 2). 2(4x-(x+3))=2x+6 3). 3(2x+6)=4(x-1) mohon dibantu yaaa pakai cara..... terimakasih

1) 5x + 2 = 12
5x = 12 - 2
5x = 10
x = 2

2) 2(4x - (x + 3)) = 2x + 6
2(4x - x - 3) = 2x + 6
2(3x - 3) = 2x + 6
6x - 6 = 2x + 6
6x - 2x = 6 + 6
4x = 12
x = 3

3) 3(2x + 6) = 4(x - 1)
6x + 18 = 4x - 4
6x - 4x = - 4 - 18
2x = - 22
x = - 11

1) 5x + 2 = 12 
    5x = 12-2 
    5x = 10 
      x = 10:5 = 2

2) 2(-4xpangkat2+12x)= 2x+6 
    -8xpangkat2 + 24x = 2x+6
    -8xpangkat2 + 24x - 2x = 6
    -8xpangkat2 + 22x = 6

3) 3(2x+6)=4(x-1)
    = 6x+18 = 4x-4
    = 6x-4x = -4-18
     =2x=-22
    x= -11
Semoga membantu :)