## Algebra 2 Common Core

We start by distributing. We have $3(x+1)=9+2x$ $3x+3=9+2x$. Now, we add (-2x) and (-3) to both sides to isolate $x$ and its coefficient. We now have $x=6$. To check, we substitute 6 (the answer) into the equation. We have $3((6)+1)=9+2(6)?$ $3(7)=9+12?$ $21=21$, which is true.