Question
Explain the mistake that is made.Simplify the expression $\frac{2}{3}+\frac{1}{9}$Solution:Add the numerators and denominators. $\frac{2+1}{3+9}=\frac{3}{12}$Reduce.$$=\frac{1}{4}$$This is incorrect. What mistake was made?
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The LCD of 3 and 9 is 9. Show more…
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