25/17-y=200/56 помогите

Question

25/17-y=200/56 помогите

Answer 1

25 : (17-у) = 200 :56;  200(17-у) = 25 * 56; 3400 - 200у = 1400;

200у = 3400 - 1400; 200у = 2000; у = 10

Answer 2

25/17-y=200/56
y=(25/17)/(200/56)
y=(25*56)/(17*200)
y=56/(17*8)
y=7/17