Linear equations for pre-ib algebra 2. solve for s, r(s + t) = st. every time i do this i get down to s= -rt / r-t and i put it in and it says that i am wrong. would the in the denomination t cancel out the of the numerator r?

R(s + t) = st

Rs + Rt = st

Rs - st = -Rt

s ( R - t) = -Rt

*s = - Rt / (R - t) Multiply through by -1 on the right.

*s = Rt / (t - R) Put in the brackets in your answer. What you have been writing means

s = Rt/r - R you need the brackets. The stars mean that either could be an answer. I think your problem could be the brackets. Now I'm reasonably certain this is correct.

goog may have it for you