Add 30/56 and 21/72
30/56 + 21/72 is 139/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
30/56 = 30 × 9/56 × 9 = 270/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504 - Add the two like fractions:
270/504 + 147/504 = 270 + 147/504 = 417/504 - 417/504 simplified gives 139/168
- So, 30/56 + 21/72 = 139/168
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