Question

Resolva em R
2x+6=5x+1

3(2x+1)=2x

7x-2=5-x

Answer 1

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

3(2x+1)=2x
6x+3=2x
4x=-3
x=-3/4

7x-2=5-x
8x=7
x=7/8

Answer 2

2 x + 6 = 5 x   + 1
2 x - 5 x = 1 - 6
- 3 x = -5
x = -5/-3
x = +1,66....

3(2 x + 1 ) = 2 x
6 x + 3 = 2 x
6 x - 2 x = -3
4 x = -3
x = -3/4

7 x - 2 = 5 - x
7 x + x = 5 + 2
8 x = 7
x = 7/8