Add 28/42 and 80/45
1st number: 28/42, 2nd number: 1 35/45
28/42 + 80/45 is 22/9.
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,
28/42 = 28 × 15/42 × 15 = 420/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
80/45 = 80 × 14/45 × 14 = 1120/630 - Add the two like fractions:
420/630 + 1120/630 = 420 + 1120/630 = 1540/630 - 1540/630 simplified gives 22/9
- So, 28/42 + 80/45 = 22/9
In mixed form: 24/9
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