You would first make an equation for each problem. Use c for chairs and t for tables. It says 7 chairs and 9 tables is $91. So the equation would be 7c + 9t = 91. You would do the same for the other set of numbers, 5c + 3t = 35. You would want to get one of the variables by then self. I did the problem and I decided to get rid of c first so for the first problem I multiplied by -5 and the other problem by 7 that makes c -35 and 35. You would add the two problems together then simplify the problem all the way down. When you get that answers you end up and answer for t you plug that number in one of the equation for t and simplify down for c. If you need a more detailed explanation plz let me know.
