You need to know the least common denominator (LCD) of 56 and 5 if you want to add or subtract two fractions with 56 and 5 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 56 and 5 is 280.
Here is a math problem example where you need to know the LCD of 56 and 5 to solve:
3/56 + 2/5 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
280/56 = 5
280/5 = 56
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 5 = 15
2 x 56 = 112
Step 3) Put it all together to solve the problem:
15/280 + 112/280 = 127/280
= 3/56 + 2/5 = 127/280
It's that easy! Once again, the lowest common denominator (LCD) of 56 and 5 is as follows:
280
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