Add 20/45 and 80/70
1st number: 20/45, 2nd number: 1 10/70
20/45 + 80/70 is 100/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
20/45 = 20 × 14/45 × 14 = 280/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
80/70 = 80 × 9/70 × 9 = 720/630 - Add the two like fractions:
280/630 + 720/630 = 280 + 720/630 = 1000/630 - 1000/630 simplified gives 100/63
- So, 20/45 + 80/70 = 100/63
In mixed form: 137/63
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