ta có:
2016 + x X 3 = 10269
x X 3 = 10269 - 2016
x X 3 = 8256
x = 8256 :3
x = 2751
vậy x =2751
2016 + x X 3 = 10269
2016 + (x X 3) = 10269
= (10269 - 2016) : 3
= 8253 : 3
= 2751
2016 + X x 3 = 10269
X x 3 = 10269 - 2016
X x 3 = 8253
X = 8253 : 3
X = 2751