You need to know the least common denominator (LCD) of 75 and 92 if you want to add or subtract two fractions with 75 and 92 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 75 and 92 is 6900.
Here is a math problem example where you need to know the LCD of 75 and 92 to solve:
3/75 + 2/92 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
6900/75 = 92
6900/92 = 75
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 92 = 276
2 x 75 = 150
Step 3) Put it all together to solve the problem:
276/6900 + 150/6900 = 426/6900
= 3/75 + 2/92 = 426/6900
It's that easy! Once again, the lowest common denominator (LCD) of 75 and 92 is as follows:
6900
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