says find the least common denominator of each group of fractions .some groups will include more than two fractions.they are 1/2and 1/3,and 1/5?besides 30

Since all of those denominators are prime, the LCD of all of them will be the product of all of them. It must be 30.

30

wat will the fractions look like

You have to multiply each fraction by 1= a/a where a is the factors it's missing.

i understand for each the denominator is 30 so ,wat are the other fraction numerators ?

Well what version of 1 = a/a do you need to multiply 1/2 by to make the denominator 30?

\[\frac{1}{2} \cdot \frac{a}{a} = \frac{a}{30}\] What must a be?

\begin{align}\frac{1}{3}\cdot \frac{b}{b} &= \frac{b}{30}\\ \frac{1}{5} \cdot \frac{c}{c} &= \frac{c}{30}\end{align} What must b and c be?

1/2=15/30 1/3=10/30 1/5=6/30

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