5x -8 =7x+12 dbantu y kak buat beaok soalnya

5x – 8 = 7x + 12
5x – 7x = 12 + 8
-2x = 20
x = -10

5x-8 = 7x+12
5x-7x = 12+8
-2x = 20
x = 20/-2
x = -10