selesaikan setiap persamaan berikut please jwb dengan bnr.

Persamaan Linier

1.
(2x+4)/4 - (5x)/8 = (2x +4)/ 6....kalikan KPK penyebut=24
6(2x +4)- 3(5x) = 4(2x+4)
12 x + 24 - 15x = 8x + 16
-3x + 24 = 8x + 16
- 11x = -8
x = 8/11

2.
x/7 + (x -1)/3 = (2x +1)/21 - 1/3 ....kalikan denbgan 21
3(x) + 7(x -1) = (2x + 1) - 7
3x + 7x - 7 = 2x - 6
10x - 7 = 2x - 6
10x - 2x = 7- 6
8x = 1
x = 1/8

3.
2/x - 2/5 = 1/x + 11/10 ....kalikan 10x
20 - 4x = 10 + 11x
-4x -11x = 10 - 20
-15x = - 10
x = 10/15 = 2/3

4.
5/(7x) - 7/(2x) - 3 = 3/14 .....kalikan 14x
2(5) - 7(7) - 3(14x) = 3
10 - 49- 42x = 3
- 39 - 42 x = 3
-42 x = 3 + 39
-42x = 42
 x  = -1