Question

solve using one-to-one property
ln(x+3)=ln(x+1)=ln8

Answer 1

wrong!!!

Answer 2

the given answer is 1 but i cannot work it out to equal 1...\[\ln (x+3)+\ln (+1)=\ln 8\]
\[(x+3)+(x+1)=8\]\[2x+4=8\]\[2x=4\]\[x=2\]

Answer 3

thats how i work it out... book says answer is 1