The correct answer to the above question is 3n^3/5m^2, i.e., the third option
9x-3+69-3x=0
6x+66=0
6x=-66
X=-11
2.2367 , therefore to the nearest hundredth it would be 2.237
3x - 15
less than or more than trick-------> the number before those words should be the second number in the equation