22. -x + 5 = 2× -4
a. 3. b. 4. c. 2. d. 1

23. × + 11 = 20
a. 11. b. -5. c. 4. d. 5

24. -15 - x = 20
a. 5. b. -5. c. 0. d. 1

25. 2× =8
a. 2. b. 3. c. 4. d. 5

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