Tolong dibantu ya bagian A,B,C,D. makasih

a.
x/4 = 5/12
x = 5 x 4/12
x = 5/3

b.
x/9 = 12/8
x = 12 x 9/8
x = 108/8 = 13,5

c.
15/(y + 4) = 20/16
240 = 20y + 80
160 = 20y
y = 8

d.
(y - 3)/6 = 21/14
14y - 42 = 126
14y = 168
y = 12

SEMOGA TERBANTU

D's legacy