x = 1-3(x+1)

x = 1-3(x+1) x = 1 - 3x-3 x+3x=1-3 4x=-2/4 x=-½

x=1-3(x+1) x=1-3x-3 x=-2-3x stronami+3x 4x=-2 stronami/4 x=-0,5