For the denominators (7, 21) the least common multiple<span> is </span>21.
Therefore, the least common denominator (LCD<span>) is </span>21.
<span>Rewriting the original inputs as equivalent fractions with the </span>LCD:
<span>15/21, 1/21</span>

<h2>
Explanation:</h2>
in this problem we have the following expression:

So here:

Let's convert them as improper fractions:

Rewriting our expression:

<h2>Learn more:</h2>
Simplify: brainly.com/question/10644722
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Answer:
h=(-22) i believe.
Step-by-step explanation:
(8)-5=3
3-h(or -22)=-19
Answer:
1.5(x)
Step-by-step explanation:
find out how many hours are in 90 minutes
1.5
x miles