Add 10/54 and 5/21
10/54 + 5/21 is 80/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
10/54 = 10 × 7/54 × 7 = 70/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
5/21 = 5 × 18/21 × 18 = 90/378 - Add the two like fractions:
70/378 + 90/378 = 70 + 90/378 = 160/378 - 160/378 simplified gives 80/189
- So, 10/54 + 5/21 = 80/189
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