Title: Math 7 Simplify before Solving
Course: quiz duplicate error

Show the steps you use to solve the equation. Don't forget to simplify first!

3x - 5x = -1

Show the steps you use to solve the equation. Don't forget to simplify first!

3x - 2 + 5x = -26

Show the steps you use to solve the equation. Don't forget to simplify first!

10 - 3x + 5 + 2x = -8

Q: Simplify where possible. Then solve the equation.

25 - 5 = 2r
- r = -3 (incorrect)
- r = 10 (correct)
- r = -10 (incorrect)
- r = 0 (incorrect)
A: r = 10

Q: Simplify where possible. Then solve the equation.

-4 = 5y - y
- y = -4 (incorrect)
- y = -1 (correct)
- y = -6 (incorrect)
- y = 1 (incorrect)
A: y = -1

Q: Simplify as much as possible. Then solve the equation.

3x - 4 + x = 40
- x = 12 (Incorrect. Add the x to the 3x first.)
- x = 22 (Incorrect. It is 3x + x)
- x = 11 (You got it!)
- x = 18 (Incorrect. Make sure you add 4 to both sides.)
A: x = 11

Q: Solve the equation.

37 – 18 + 8w = 67
- w = -6
- w = 4
- w = 7
- w = 6
A: w = 6

Q: Solve the equation.

42 + 3 + 3m = 66
- m = 4
- m = 7
- m = -7
- m = 9
A: m = 7

Q: Simplify as much as possible. Then solve the equation.

4 - 5x + 2 + x - 6 = -4
- x = 4/5 (Incorrect. Don't forget to add the x to the -5x.)
- x = -1 (Incorrect. Watch your negative signs!)
- x = 1 (You have some solving skills.)
- x = 16 (Incorrect. Make sure you subtract the 6 when simplifying.)
A: x = 1

Q: Kira has twice as many necklaces as I have. Together we have a total of 15 necklaces. Write an equation to find how many necklaces, n,  I have.
- n + 2 = 15 (Incorrect. Does Kira only have 2 necklaces?)
- n + 2n = 15 (Correct. Great job!)
- 2n + 1 = 15 (Incorrect. Why did you add only 1 necklace?)
- n/2 + n = 15 (Incorrect. n should represent my necklaces, not Kira's.)
A: n + 2n = 15

Q: Kira has twice as many necklaces as I have. Together we have a total of 15 necklaces. Solve to find how many necklaces I have.
- I have 5 necklaces.
- I have 10 necklaces. (Incorrect. Do I have more necklaces than Kira?)
- I have 7 necklaces. (Incorrect. That would give Kira only 8 necklaces.)
- I have 3 necklaces. (Incorrect. Kira would then have 12 necklaces, which is four times the number I would have.)
A: I have 5 necklaces.

Q: Kayden and 2 friends are going out for pizza for lunch. They split one pizza and 3 large drinks. The pizza cost $14.00. After using a $7.00 gift certificate, they spend a total of $12.10. How much did each drink cost? Write an equation to model this situation.
- $14.00 + 3d – $7.00 = $12.10
- $14.00 + 2d – $7.00 = $12.10 (They bought 3 drinks, not just 2.)
- 3d – $14.00 + $7.00 = $12.10
- $14.00 + 3d + $7.00 = $12.10
A: $14.00 + 3d – $7.00 = $12.10

Q: John and 2 friends are going out for pizza for lunch. They split one pizza and 3 large drinks. The pizza cost $14.00. After using a $7.00 gift certificate, they spend a total of $12.10. What was the cost of each drink? Solve.
- $1.70
- $2.55
- $9.55
- $1.90
A: $1.70

Q: A ticket agency sells tickets to a professional basketball game. The agency charges $32.50 for each ticket, a convenience charge of $3.30 for each ticket, and a processing fee of $5.90 for the entire order. The total charge for an order was $220.70. How many tickets were purchased? Write an equation for this situation.
- 32.50t + 3.30 + 5.90 = 220.70 (Incorrect. The convenience fee is charged for each ticket.)
- 32.50t + 3.30t + 5.90 = 220.70 (Great work!)
- 5.90t + 3.30t + 32.50 = 220.70 (Incorrect. The processing fee is only charged once, not for each ticket.)
- 5.90t + 3.30 + 32.50 = 220.70 (Incorrect. The processing fee is only charged once, not for each ticket.)
A: 32.50t + 3.30t + 5.90 = 220.70

Q: A ticket agency sells tickets to a professional basketball game. The agency charges $32.50 for each ticket, a convenience charge of $3.30 for each ticket, and a processing fee of $5.90 for the entire order. The total charge for an order was $220.70. How many tickets were purchased? Solve.
- 7 tickets (Incorrect.)
- 6 tickets (Excellent solving!)
- 27 tickets (Incorrect.)
- 220 tickets (Incorrect.)
A: 6 tickets