Add 54/63 and 21/30
54/63 + 21/30 is 109/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
54/63 = 54 × 10/63 × 10 = 540/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
21/30 = 21 × 21/30 × 21 = 441/630 - Add the two like fractions:
540/630 + 441/630 = 540 + 441/630 = 981/630 - 981/630 simplified gives 109/70
- So, 54/63 + 21/30 = 109/70
In mixed form: 139/70
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