Add 28/30 and 18/63
28/30 + 18/63 is 128/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
28/30 = 28 × 21/30 × 21 = 588/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
18/63 = 18 × 10/63 × 10 = 180/630 - Add the two like fractions:
588/630 + 180/630 = 588 + 180/630 = 768/630 - 768/630 simplified gives 128/105
- So, 28/30 + 18/63 = 128/105
In mixed form: 123/105
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