Add 12/14 and 15/45
12/14 + 15/45 is 25/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 14 × 45 = 630,
12/14 = 12 × 45/14 × 45 = 540/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
15/45 = 15 × 14/45 × 14 = 210/630 - Add the two like fractions:
540/630 + 210/630 = 540 + 210/630 = 750/630 - 750/630 simplified gives 25/21
- So, 12/14 + 15/45 = 25/21
In mixed form: 14/21
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