anonymous
  • anonymous
simplify the expression: ((2/b)-(1/3))/((4/b^2)-(1/9))
Mathematics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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goformit100
  • goformit100
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anonymous
  • anonymous
\[\frac{ 2 }{ b }-\frac{ 1 }{ 3 }\div \frac{ 4 }{ b ^{2} }-\frac{ 1 }{ 9 }\]
anonymous
  • anonymous
so lets first look at the first one \[\frac{ 2 }{ b}-\frac{ 1 }{ 3 }\] what is the common denominator

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anonymous
  • anonymous
would I have to multiply b to 1/3 and 3 to the 2/b?
anonymous
  • anonymous
yes :)
anonymous
  • anonymous
now what about the second one
anonymous
  • anonymous
so the first one we have \[\frac{ b }{ 3b }-\frac{ 6 }{ 3b}\] right ?
anonymous
  • anonymous
right, and then the second one would be 36/9b^2 and b^2/9b^2
anonymous
  • anonymous
right so we have \[\frac{ b -6}{ 3b}\div \frac{ 36-b ^{2} }{ b ^{2} }\] so what do u do now with dividing fractions
anonymous
  • anonymous
multiply by the recipricol to make it easier?
goformit100
  • goformit100
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