anonymous
  • anonymous
7/9+9/11=? fraction answer plz
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
\[\frac{a}{b}+\frac{c}{d}=\frac{a\times d+b\times c}{b\times d}\]
Isaiah.Feynman
  • Isaiah.Feynman
\[\frac{ a }{ b }+\frac{ c }{ d }= \frac{ ad+bc }{ bd }\]
anonymous
  • anonymous
can i get a staitup answer not a harder version

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anonymous
  • anonymous
\[\frac{7}{9}+\frac{9}{11}\] \[=\frac{7\times 11+9\times 9}{9\times 11}\]
anonymous
  • anonymous
there is no royal road to arithmetic you just have to compute it
anonymous
  • anonymous
or 77/99 + 81/99 158/99
anonymous
  • anonymous
1 59/99
anonymous
  • anonymous
what is so hard about saying that. damn
Isaiah.Feynman
  • Isaiah.Feynman
@Liam4Life that formula we gave only works when the denominator of the two fractions are different.
anonymous
  • anonymous
well still. you could of did the easy way
Isaiah.Feynman
  • Isaiah.Feynman
That's the easiest way. :P
anonymous
  • anonymous
multiply 9 and 11 7 and 11 9 and 9 then you have 77/99 + 81/99 then thats 1 59/99 and thats the answer
anonymous
  • anonymous
see easy
Isaiah.Feynman
  • Isaiah.Feynman
Easy, but not easier.

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