jika 2(x-5) = 4x-8 maka nilai 2x-1 adalah

2 (x-5) = 4x - 8
2x - 10 = 4x - 8
2x - 4x = -8+10
-2x = 2
x = 2 : (-2) = -1
 
2x - 1 = 2.(-1) - 1 = -2 -1 = -3

semoga membantu kakak :)