You can put this solution on YOUR website! 1. multiply with 3s in every term, then 1+(3s)(7/9) = 4.
2. subtract 1 in every term, then 3s(7/9) = 3.
3. divide with 3 in every term, then s(7/9) = 1
4. multiply with 9/7 or divide with 7/9 in every term, then s=9/7
5. answer s= 9/7.