Just got done taking a test in my Alg class. I had trouble with one problem though. 2^(x+1)=5^(3x) My answer came out to line -.66 when solved and he said to leave it in logarithmic form. My answer was something like x =((ln5/ln2)-1)/-2. I looked through my notes and everything and couldn't find a problem like it, can someone help me?