Răspuns :
5a + b = 78
3b + 7c = 50
10a + 14b + 28c = 10a + 2b + 12b + 28c = 2(5a +b) + 4(3b + 7c) = 2*78 + 4*50 = 156 + 200 = 356
Răspuns:
5a+b=78 I·2
10a+2b=156
3b+7c=50 I·4
12b+28c=200
10a+2b+12b+28c=156+200
10a+14b+28c=356
5a + b = 78
3b + 7c = 50
10a + 14b + 28c = 10a + 2b + 12b + 28c = 2(5a +b) + 4(3b + 7c) = 2*78 + 4*50 = 156 + 200 = 356
Răspuns:
5a+b=78 I·2
10a+2b=156
3b+7c=50 I·4
12b+28c=200
10a+2b+12b+28c=156+200
10a+14b+28c=356