Extra Set

Grade 8 · Unit 3 · L10 · Version A · 3FA3

Linear equations in one variable

Name ________________

Date ________________

Period ________________

1.
Solve 4x + 7 = 5x + 3.
Answer. x = 4
Subtract 5x from both sides, then isolate x. x = 4.
2.
Solve 2x + 5 = 4x − 13.
Answer. x = 9
Subtract 4x from both sides, then isolate x. x = 9.
3.
Solve 5x + 5 = 4x + 9.
Answer. x = 4
Subtract 4x from both sides, then isolate x. x = 4.
4.
Solve 5x + 3 = 2x + 12.
Answer. x = 3
Subtract 2x from both sides, then isolate x. x = 3.
5.
Solve 4x + 2 = 2x + 20. Write a complete answer — Owen will compare with a partner.
Answer. x = 9
Subtract 2x from both sides, then isolate x. x = 9.
6.
Solve 3x + 5 = 2x + 10. Write a complete answer — Grace will compare with a partner.
Answer. x = 5
Subtract 2x from both sides, then isolate x. x = 5.
7.
Solve 6x + 1 = 4x + 11. Write a complete answer — Sam will compare with a partner.
Answer. x = 5
Subtract 4x from both sides, then isolate x. x = 5.
8.
Solve 5x + 4 = 1x + 16. Write a complete answer — Owen will compare with a partner.
Answer. x = 3
Subtract 1x from both sides, then isolate x. x = 3.
9.
Solve 5x + 7 = 5x + 7. Write a complete answer — Mei will compare with a partner.
Answer. x = 6
Subtract 5x from both sides, then isolate x. x = 6.
10.
Solve 5x + 5 = 1x + 13. Write a complete answer — Sam will compare with a partner.
Answer. x = 2
Subtract 1x from both sides, then isolate x. x = 2.
11.
Think
Ava tried this problem:
Solve 2x + 7 = 2x + 7.
Ava wrote x = 16. That is not correct. What is the right answer?
Answer. x = 8
Ava’s answer x = 16 is off. Subtract 2x from both sides, then isolate x. x = 8.
12.
Think
Priya tried this problem:
Solve 4x + 5 = 2x + 17.
Priya wrote x = 12. That is not correct. What is the right answer?
Answer. x = 6
Priya’s answer x = 12 is off. Subtract 2x from both sides, then isolate x. x = 6.

Original extra practice. Keys are computed from the items, not guessed.

L10 · Linear equations in one variable