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Answer Key 2.3

  1. a
    2(3a8)=122(3a8)=13a+8=1883a=9a=3
  2. a
    2(3n+8)=2022(3n+8)=2023n+8=10883n3=183n=6
  3. a
    5(4+2v)=5055(4+2v)=5054+2v=10+4+42v2=142v=7
  4. a
    28(4+3x)=342288(4+3x)=3284+3x=4+4+43x=0x=0
  5. a
    666=66(6+5x)11=6+5x6655=5x5x=1
  6. a
    32=25(4n+6)22305=55(4n+6)6=4n+666124=4n4n=3
  7. a
    2+2(8x9)=16+2+222(8x9)=1428x9=7+9+98x=2x=14
  8. a
    3+5n=12+3+35n5=155n=3
  9. a
    17m=8m+77+7m+7m7(8=m)(1)m=8
  10. a
    56p48=6p+26p+486p+4850p50=5050p=1
  11. a
    112r=298r1+8r1+8r4r4=284r=7
  12. a
    4+3x=12x+44+12x+12x415x=0x=0
  13. a
    207b=12b+3020+12b+12b205b5=105b=2
  14. a
    16n+12=397n+7n1212+7n9n9=279n=3
  15. a
    25(24m)=33+5m+2+210+20m=35+5m+105m+105m15m15=4515m=3
  16. a
    257x=12x6+2512x12x+2519x19=1919x=1
  17. a
    4n+11=216n+3n+16n1111+16n3n3n9n9=99n=1
  18. a
    77b=55b+7+5b+7+5b2b2=22b=1
  19. a
    6v29=4v5v5+4v+29+4v+5v+29+5v3v3=243v=8
  20. a
    64r+16=3r+163r163r1667r=0r=0
  21. a
    8x8=204x+4x+8+8+4x12x121212x=1
  22. a
    8n19=16n+6+3n+16n+19+16n+193n3n5n5=255n=5
  23. a
    2m+4+7m56=674+56+5645m5=155m=3
  24. a
    7=4n28+35n+35+28+2835350=39nn=0
  25. a
    50=56+56r4r65656+6+60=52rr=0
  26. a
    4848x12+24x=12+48+12+12+4824x24=4824x=2

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