Add 54/56 and 21/70
54/56 + 21/70 is 177/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
54/56 = 54 × 5/56 × 5 = 270/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
21/70 = 21 × 4/70 × 4 = 84/280 - Add the two like fractions:
270/280 + 84/280 = 270 + 84/280 = 354/280 - 354/280 simplified gives 177/140
- So, 54/56 + 21/70 = 177/140
In mixed form: 137/140
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