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Say there's 2/3 and 1/2, it's called Least Common Denominator, so you need to look at the denominators which are 3 and 2.
Now list the multiples:
3: 1, 3, 6...
2: 1, 2, 4, 6...
As you can see both of them go into 6 the least amount of times because it's the one that they both can multiply.
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What is the lcd of 3 over 4?
To find an LCD, you need to have at least two denominators.
How do you find equivalent fractions with lcd?
For the first fraction, divide the give denominator into the LCD, take that result and multiply by the given numerator to create a new numerator for the LCD. Repeat for each fraction.
How do you subtart fractions?
subtract? Find a common denominator (LCD is preferred). Convert each fraction to an equivalent fraction with the LCD. Add numerators, keep LCD as new denominator. Reduce the fraction.
Is LCM the same as LCD?
The same process is used to find both. When it's a whole number, we call it the LCM. When the whole number is a denominator, we cal it the LCD.
How would you find the LCD when adding or subtracting rational expressions with different denominators?
No
