Question

tìm x biết 

|x-155|=-223+456

Answer 1

|x-155|=-223+456

=> |x-155|=233

+) x-155=233

=> x=233+155

=> x=388

+) x-155=-233

=> x=-233+155

=> x=-78

Vậy x \(\in\){-78; 388}.

Answer 2

|x-155|=-223+456

|x-155|=233

=>|x-155|=+233

TH1:

x-155=233

x=233+155

x=388

TH2:

x-155=-233

x=-233+155

x=-78

Vay :x=388 hoac -78

Answer 3

|x - 155| = -223 + 456

=> |x - 155| = 233

=> x - 155 E {-233; 233}

=> x E {-78; 388}

Answer 4

|x-155|=-223+456

|x-155|=233

x-155=233 hoặc x-155=-233

x=233+155       x=-233+155

x=388              x=-78

Vậy x=388 hoặc x=-78