14. Johan practices the drums for 45 minutes on Saturday and 25 minutes on most weekdays. Last week he practiced 120 minutes. How many weekdays did he practice? Write an equation in the form of px + q = r to represent this problem.(3 points)

Answer 1

Let x be the number of weekdays Johan practiced.
The total time Johan practiced on weekdays is 25x minutes.
The total time Johan practiced is 25x + 45 = 120 minutes.
We want to find the value of x.
Subtract 45 from both sides of the equation 25x + 45 = 120 to get 25x = 75.
Divide both sides of the equation by 25 to get x = 3.
The equation in the form of px + q = r is 25x + 45 = 120. Answer: \boxed{3}.