ANSWER: X = 45 First, you have to set up the equation. If the area of the square is 9, and one side is 3 square units, then the other side must also be 3 units because 3X3=9. When finding the value of a variable, you ALWAYS want to get the variable alone on one side. So now, you take the equation, 1/9x-2 and make is equivalent to 3. 1/9x-2=3 Now, to simplify, you add to to undo the -2, and add 2 to the 3 1/9x-2(+2)=3+2 So now the equation is 1/9x=5 To undo a fraction, think of it as a division problem. To undo a division problem, you must multiply the fraction by the denominator. 1/9x(9)=5(9) 5X9 is 45 So the answer is X=45 And is you want to check it: 1/9(45)-2=3 1/9X45 is 45/9 or 5 5-2=3 3=3 The answer is X=45
