Question

tim x biet |x-3|+4=12

Answer 1

|x-3|+4=12

|x-3|=12-4=8

suy ra x-3= +-8

Nếu x-3=8

suy ra x=8+3=11

nếu x-3=-8

suy ra x=-8+3=-5

tick nha

Answer 2

|x-3|+4=12

|x-3|=12-4

|x-3|=8

=>x-3=8     hoặc x-3=-8

x=8+3                 x=-8+3

x=11                    x=-5