Tolong dijawab plisss

K = s+s+s
56 = 10 + 2s
46 = 2s
23 = s
*) 23 = 5x - 2
25 = 5x
5 = x
*) 23 = 3x + 2y
23 = 3(5) + 2y
23 = 15 + 2y
8 = 2y
4 = y
*) x-y = 5 - 4 = 1