Răspuns :
a + b = 300
a = b + 36
b + 36 + b = 300
2b = 300 - 36
2b = 264
b = 264 : 2
b = 132
a = 132 + 36
a = 168
a = b + 36
b + 36 + b = 300
2b = 300 - 36
2b = 264
b = 264 : 2
b = 132
a = 132 + 36
a = 168