Solucion :
1.
) 2x + 2 = 6
2x = 6 - 2
2x = 4
x = 4 / 2
x = 2
2.
) 3 (2x + 3) = 4x + 6
6x + 9 = 4x + 6
6x - 4x = 6 - 9
2x = - 3
x = - 3 / 2
3.
) 8x + 4x - 3 = x + 5
8x + 4x - x = 5 + 3
11x = 8
x = 8 / 11
4.
) 6 (x + 2) + 3x = 2 (x - 1) - 2
6x + 12 + 3x = 2x - 2 - 2
6x + 3x - 2x = - 2 - 2 - 12
7x = - 16
x = - 16 / 7
5.
) 2x - 13 = 1
2x = 1 + 13
2x = 14
x = 14 / 2
x = 7
6.
) (5 - x) / (4 - 5) + x / 5 = (1 - x) / (4 + 1)
5 - x / ( - 1) + x / 5 = 1 - x / (5) - 5 (5 - x) + x.
1 - x - - - - - - - - - - - - - - - - - - = - - - - - - - - - - - -
.
5. 5 - 25 + 5x + x / (5) = 1 - x / 5 - 25 + 6x / (5) = 1 - x / 5
multiplicando ambos lados por 5 para eliminar el 5 - 25 + 6x = 1 - x
6x + x = 1 + 25
7x = 26
x = 26 / 7.