a, a = 40; b = 226
a + b = 40 + 226 = 266
b, a = 160; b = 347
a + b = 160 + 347 = 507
a/ Nếu a=40, b=226 thì a+b=40+226=266
b/ Nếu a=160,b=347 thì a+b=160+347=507
a,a = 40;b=226
a+b=40+226=266
b,a=160,b=347
a+b=160+347=507
a,a+b=40+226
=266
b,a+b=160+347
=507