lilbro08
lilbro08 lilbro08
  • 11-01-2017
  • Mathematics
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What is 2(d+9)? Anyone know?

What is 2d9 Anyone know class=

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abraham8
abraham8 abraham8
  • 11-01-2017
2(d+9)
2×d+2×9
2d+18
2d÷2=d
18÷2=9
d=9
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