Di ketahui 5(x+3)-25=3(4x-1)nilai dari x-1 adalah

5(x + 3) - 25 = 3(4x - 1)
5x + 15 - 25 = 12x - 3
5x - 12x = - 3 - 15 + 25
- 7x = 7
x = - 7/7
x = - 1

x - 1
= - 1 - 1
= - 2

Maaf Kalau Salah

5(x+3)-25 = 3(4x-1)
5x+15-25  = 12x-3
5x-12x     = 10-3
-7x          = 7
x              = -7/7
                 = -1

x-1 = -1-1 = -2

smoga membantu