Add 80/42 and 60/45
1st number: 1 38/42, 2nd number: 1 15/45
80/42 + 60/45 is 68/21.
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,
60/45 = 60 × 14/45 × 14 = 840/630 - Add the two like fractions:
1200/630 + 840/630 = 1200 + 840/630 = 2040/630 - 2040/630 simplified gives 68/21
- So, 80/42 + 60/45 = 68/21
In mixed form: 35/21
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