You need to know the least common denominator (LCD) of 50 and 77 if you want to add or subtract two fractions with 50 and 77 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 50 and 77 is 3850.
Here is a math problem example where you need to know the LCD of 50 and 77 to solve:
3/50 + 2/77 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
3850/50 = 77
3850/77 = 50
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 77 = 231
2 x 50 = 100
Step 3) Put it all together to solve the problem:
231/3850 + 100/3850 = 331/3850
= 3/50 + 2/77 = 331/3850
It's that easy! Once again, the lowest common denominator (LCD) of 50 and 77 is as follows:
3850
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