316 + 23 - x = 62
339 - x = 62
x = 339 - 62
x = 277
316 + 23 - x = 62
=> 339 - x = 62
=> x = 339 - 62
=> x = 277
=> 23-x=62-316
=> 23-x= -254
=> x = 23 + 254
=> x = 277
339 - x = 62
x = 339 - 62
x = 277
ủng hộ mk nhak
316 + 23 - x = 62
=>23-x=62-316
=>23-x=-254
=> x=23+254
=>x=277
316 + 23 - x = 62
339 - x = 62
x = 339 - 62
x = 277
ta có : 316+23-x=62
suy ra: 339-x=62
x= 339-62
x=277