Question

I am terrible at math - please help! How do I add fractions with unlike denominators? such as 21/110 + 1/11 ???

Answer 1

Find the LCM. (Least common multiple). That is 110. So you have to multiply the 11 in 1/11 by 10 in order to get 110. You have to multiply the top as well as the bottom. So it looks like this: 10/110 plus 21/110. 10 plus 21 is 31. Answer is 31/110. :)

Answer 2

thank you

Answer 3

Use LaTeX!
\[
\begin{align*}
&\frac{21}{110}+\frac{1}{11} \\
=&\frac{21}{110}+\frac{1\times10}{11\times10} \\
=&\frac{21}{110}+\frac{10}{110} \\
=&\frac{31}{110}
\end{align*}
\]

Answer 4

LaTex???

Answer 5

No problem. :)

Answer 6

That thing that shows mathematical formula.

Answer 7

OHHH! Thx