How do you solve st+3t=6

You will factor out the common factor of t if you are solving for t. you will then divide both sides by (s+3) to make t the subject of the formula. for this question you can only get t in terms of s.

so:

st+3t=6

t (s+3) / (s+3) = 6 / (s+3)

t=6 / (s+3)

if you are required to solve for s then you are going to subtract 3t from both sides. you can factorise 6-3t. you will then divide both sides by t to isolate s. for this question you can only get s in terms of t. so:

st+3t-3t=6-3t

st/t=2 (3-t) / t

s=2 (3-t) / t