Peggyfitzs Peggyfitzs
  • 25-03-2016
  • Mathematics
contestada

Solve -2d +3 = 17 + 5d

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apologiabiology
apologiabiology apologiabiology
  • 25-03-2016
remember we can do anything to an equation as long as we do it to both sides
and adding a negative of something cancels it so

-2d+3=17+5d
isoltate unknown
add 2d to oth sides
3=17+7d
subtract 17 from both sides
-14=7d
divide 7
-2=d

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