Problem 28 of 7
Two boxes each contain x books and 4 magazines. There are 20 items total. Write and solve an equation using parentheses.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
model grouped quantities, distribute, solve.
Hidden until you reveal it.
Grouped expression must represent repeated bundle.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Identify the repeated group.
2. Put the group inside parentheses and multiply by the number of groups.
3. Divide, then subtract the constant inside the group.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Equation that fails to group repeated quantity.