Question

I would like to know the answer to this question I've been trying and can't seem to get it

Answer 1

y = 5 because if RT=66 then if you add RS and ST you will get 66

Answer 2

y=5
RS= 47
ST= 19
9y+2+3y+4=66 combine like terms for 12y+6=66 isolate y so 12y+6-6=66-6 giving 12y=60 then y=60/12
y=5