9th grade geometry
posted by molly .
if RS=8y+4,
,,ST=4y+8 and
RT=15y9 find the value of y

If RS + ST= RT then
8y+4+4y+8=15y9
solve for y 
Y=7
posted by molly .
if RS=8y+4,
,,ST=4y+8 and
RT=15y9 find the value of y
If RS + ST= RT then
8y+4+4y+8=15y9
solve for y
Y=7