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Answer Key 2.3

  1. 2−(−3a−8)=1−2−2−(−3a−8)=−13a+8=−1−8−83a=−9a=−3
  2. 2(−3n+8)=−2022(−3n+8)=−202−3n+8=−10−8−8−3n−3=−18−3n=6
  3. −5(−4+2v)=−50−5−5(−4+2v)=−50−5−4+2v=10+4+42v2=142v=7
  4. 2−8(−4+3x)=34−2−2−8−8(−4+3x)=32−8−4+3x=−4+4+43x=0x=0
  5. 666=66(6+5x)11=6+5x−6−655=5x5x=1
  6. 32=−2−5(−4n+6)−2−230−5=−5−5(−4n+6)−6=−4n+6−6−6−12−4=−4n−4n=3
  7. −2+2(8x−9)=−16+2+222(8x−9)=−1428x−9=−7+9+98x=2x=14
  8. −3+5n=12+3+35n5=155n=3
  9. −1−7m=−8m+7−7+7m+7m−7(−8=−m)(−1)m=8
  10. 56p−48=6p+2−6p+48−6p+4850p50=5050p=1
  11. 1−12r=29−8r−1+8r−1+8r−4r−4=28−4r=−7
  12. 4+3x=−12x+4−4+12x+12x−415x=0x=0
  13. 20−7b=−12b+30−20+12b+12b−205b5=105b=2
  14. −16n+12=39−7n+7n−12−12+7n−9n−9=27−9n=−3
  15. −2−5(2−4m)=33+5m+2+2−10+20m=35+5m+10−5m+10−5m15m15=4515m=3
  16. −25−7x=12x−6+25−12x−12x+25−19x−19=19−19x=−1
  17. −4n+11=2−16n+3n+16n−11−11+16n−3n−3n9n9=−99n=−1
  18. −7−7b=−5−5b+7+5b+7+5b−2b−2=2−2b=−1
  19. −6v−29=−4v−5v−5+4v+29+4v+5v+29+5v3v3=243v=8
  20. −64r+16=3r+16−3r−16−3r−16−67r=0r=0
  21. 8x−8=−20−4x+4x+8+8+4x12x12−1212x=−1
  22. −8n−19=−16n+6+3n+16n+19+16n+19−3n−3n5n5=255n=5
  23. −2m+4+7m−56=−67−4+56+56−45m5=−155m=−3
  24. 7=4n−28+35n+35+28+28−35−350=39nn=0
  25. 50=−56+56r−4r−6−56−56+6+60=52rr=0
  26. −48−48x−12+24x=−12+48+12+12+48−24x−24=48−24x=−2

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Intermediate Algebra (Convert to MathJax) Copyright © 2020 by Terrance Berg is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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