Question

1)  2x+5-5x=-1


2)  5+6x=5x+2


3)  x+2x-1-3=x

Answer 1

1) 2x -5x = -5 -1
   -3x = -6 x
x = 6/3
x = 2

2) 6x -5x = -5 +2
x = -3

 3) 3x - x = 4
 2x = 4
x = 4/2
x = 2

Answer 2

2x + 5 - 5x= -1
2x - 5x = -1 - 5
-3x = -6
Quando a variável fica negativa, multilplique por -1.
-3x .(-1) = -6.(-1)
3x = 6
x = 6/3
x = 2

5 + 6x = 5x + 2
6x - 5x = 2-5
x = -3

x + 2x - 1 - 3 = x
x + 2x -x = 1+3
2x = 4
x = 4/2
x = 2