Extra Set

Grade 7 · Unit 4 · L19 · Version A · 97ED

Write and solve inequalities

Name ________________

Date ________________

Period ________________

1.
Solve 5x + 7 > 27.
Answer. x > 4
Subtract 7: 5x > 20. Divide by 5: x > 4.
2.
Solve 2x + 1 > 9.
Answer. x > 4
Subtract 1: 2x > 8. Divide by 2: x > 4.
3.
Solve 2x + 6 > 14.
Answer. x > 4
Subtract 6: 2x > 8. Divide by 2: x > 4.
4.
Solve 2x + 4 > 8.
Answer. x > 2
Subtract 4: 2x > 4. Divide by 2: x > 2.
5.
Solve 3x + 4 > 22. Then Jonah needs 5 of that amount. What is the total they need?
Answer. x > 30
Subtract 4: 3x > 18. Divide by 3: x > 6. Then multiply by 5: x > 30.
6.
Solve 5x + 3 > 23. Then Jonah needs 4 of that amount. What is the total they need?
Answer. x > 16
Subtract 3: 5x > 20. Divide by 5: x > 4. Then multiply by 4: x > 16.
7.
Solve 2x + 6 > 16. Then Sam needs 4 of that amount. What is the total they need?
Answer. x > 20
Subtract 6: 2x > 10. Divide by 2: x > 5. Then multiply by 4: x > 20.
8.
Solve 3x + 6 > 21. Then Jonah needs 4 of that amount. What is the total they need?
Answer. x > 20
Subtract 6: 3x > 15. Divide by 3: x > 5. Then multiply by 4: x > 20.
9.
Solve 4x + 6 > 38. Then Theo needs 4 of that amount. What is the total they need?
Answer. x > 32
Subtract 6: 4x > 32. Divide by 4: x > 8. Then multiply by 4: x > 32.
10.
Solve 4x + 5 > 25. Then Grace needs 5 of that amount. What is the total they need?
Answer. x > 25
Subtract 5: 4x > 20. Divide by 4: x > 5. Then multiply by 5: x > 25.
11.
Think
Nora tried this problem:
Solve 5x + 7 > 32.
Nora wrote x > 4. That is not correct. What is the right answer?
Answer. x > 5
Nora’s answer x > 4 is off. Subtract 7: 5x > 25. Divide by 5: x > 5.
12.
Think
Jonah tried this problem:
Solve 5x + 7 > 17.
Jonah wrote x > 3. That is not correct. What is the right answer?
Answer. x > 2
Jonah’s answer x > 3 is off. Subtract 7: 5x > 10. Divide by 5: x > 2.

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

L19 · Write and solve inequalities