Add 30/15 and 45/63
1st number: 2 0/15, 2nd number: 45/63
30/15 + 45/63 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
30/15 = 30 × 21/15 × 21 = 630/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
45/63 = 45 × 5/63 × 5 = 225/315 - Add the two like fractions:
630/315 + 225/315 = 630 + 225/315 = 855/315 - 855/315 simplified gives 19/7
- So, 30/15 + 45/63 = 19/7
In mixed form: 25/7
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