You need to know the least common denominator (LCD) of 90 and 37 if you want to add or subtract two fractions with 90 and 37 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 90 and 37 is 3330.
Here is a math problem example where you need to know the LCD of 90 and 37 to solve:
3/90 + 2/37 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
3330/90 = 37
3330/37 = 90
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 37 = 111
2 x 90 = 180
Step 3) Put it all together to solve the problem:
111/3330 + 180/3330 = 291/3330
= 3/90 + 2/37 = 291/3330
It's that easy! Once again, the lowest common denominator (LCD) of 90 and 37 is as follows:
3330
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