You can put this solution on YOUR website! Let x be the number you are looking for.
"three times x" is 3x
"less" means subtraction..."less than forty five" means you are subtracting 3x FROM the 45.
"twice" means 2x
45-3x=2x Set up the equation
45=5x Add 3x to both sides
9=x Divide by 5
x=9