Răspuns :
a+b+c=294
b+c=146
a+146=294
a=294-146
a=148
b=a-22
b=148-22
b=126
126+c=146
c=146-126
c=20
148+126+20=294
a + b + c = 294
a = b + 22
b + c = 146
a + 146 = 294
a = 294 - 146
a = 148
a = b + 22
148 = b + 22
148 - 22 = b
126 = b
b + c = 146
126 + c = 146
c = 146 - 126
c = 20
verificam
148 + 126 + 20 = 294
a = b + 22
b + c = 146
a + 146 = 294
a = 294 - 146
a = 148
a = b + 22
148 = b + 22
148 - 22 = b
126 = b
b + c = 146
126 + c = 146
c = 146 - 126
c = 20
verificam
148 + 126 + 20 = 294