Add 80/42 and 15/45
1st number: 1 38/42, 2nd number: 15/45
80/42 + 15/45 is 47/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
80/42 = 80 × 15/42 × 15 = 1200/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
15/45 = 15 × 14/45 × 14 = 210/630 - Add the two like fractions:
1200/630 + 210/630 = 1200 + 210/630 = 1410/630 - 1410/630 simplified gives 47/21
- So, 80/42 + 15/45 = 47/21
In mixed form: 25/21
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