Question

как решается |x-1|=3?

Answer 1

|x-1|=3
x-1=3
x-1=-3
x1=4
x2=2

Answer 2

| X - 1 | = 3
X - 1 = 3
X - 1 = - 3
X ( 1) = 4 , X ( 2) = - 2