Question

2x-2=2(x-1) b)7(2x+1)=14

Answer 1

a) 2x - 2 = 2 (x-1)
    2 (x - 1) = 2 (x-1)
           2=2

x admite todos los números reales

b) 7 (2x + 1) = 14
        2x + 1 = 14/7
        2x + 1 = 2
        2x = 2 - 1
         2x = 1
           x = 1/2