Question

qual é a conta de x-(x+1)=12-(3x-2) ??

Answer 1

$x-(x+1)= 12-(3x-2) \\ x-x-1= 12-3x+2 \\ x-x+3x= 12+2+1 \\ 3x= 15 \\ x= \frac{15}{3} \\ x= 5$

Answer 2

 x-(x+1)=12-(3x-2) 
x - x -1 = 12 - 3x + 2
x - x + 3x = 12 + 2 + 1
3x = 15
x = 15 : 3
x = 5