a)
3x + 3 + 2 = 5 + 2x - 2
3x + 5 = 3 + 2x
3x - 2x = 3 - 5
x = -2
b)
[tex] \frac{x-1}{2} + \frac{x+1}{3} = \frac{2x+3}{5} [/tex]
15x - 15 + 10x + 10 -12x + 18 =
13x + 13 =
x = [tex] \frac{-13}{13} [/tex]
x= -1
c)
[tex] \frac{1-x}{2} = \frac{x+1+x}{2} [/tex]
[tex] \frac{1-x}{2} = \frac{2x+1}{2} [/tex]
2 - 2x = 4x + 2
4x + 2 = 2 - 2x
6x = 2 - 2
x = [tex] \frac{0}{6} [/tex]
x = 0