which of the following have a common denominator of 18
2 1/2 and 4/9
7/10 and 1 3/8
11/18 and 1 3/4
1 5/6 and 7/12

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Answer:

1.) [tex]2\frac{1}{2}[/tex] and [tex]\frac{4}{9}[/tex]

Step-by-step explanation:

To see which have the common denominator of 18, you must convert the mixed factions to improper fractions first, then try to find the LCM. Use [tex]a\frac{b}{c}=\frac{ac+b}{c}[/tex]

1.)

[tex]2\frac{1}{2}=\frac{5}{2}[/tex]

[tex]\frac{5}{2},\frac{4}{9}[/tex]

Find the LCM:

2,4,6,8,9,10,12,14,16,18,20

9,18

They both have the LCM of 18.

:Done