cara mendapatkan hasil x dan y

menurut saya:

8/(8+x) = 4/7
8*7 = 4*(8+x)
56 = 32 + 4x
56-32 = 4x
4x = 24
x = 24/4 = 6

6/(6+8) = y/14
6/14 = y/14
y*14 = 6*14
y = 6