To prepare for a new school year, Mr. Brown is buying 7 sets of 5-pack notebooks for his child. Let x be the total number of notebooks that Mr. Brown buys. Which of the following shows the correct equation and the property of equality that can be used to solve this problem?
The equation that represents the total number of notebooks that Mr. Brown buys is:
x = 7 * 5
The property of equality that can be used to solve this problem is the multiplication property of equality. According to this property, if two quantities are equal, then multiplying both sides of the equation by the same non-zero number will still yield an equal result. In this case, Mr. Brown is buying 7 sets of 5-pack notebooks, so the total number of notebooks (x) is equal to 7 times 5.