Question

Tìm X:

x+100-4+4+4+...+4+4=320

                 có 24 số 4

Answer 1

x+100-4*24=320

x+100-96=320

x+100=320+96

x+100=416

      x=416-100

      x=316

Answer 2

(x+100) -4 + 4 + 22x4 = 320

(x+100)+88=320

x=320-188

x=132