Add 20/45 and 49/70
20/45 + 49/70 is 103/90.
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,
49/70 = 49 × 9/70 × 9 = 441/630 - Add the two like fractions:
280/630 + 441/630 = 280 + 441/630 = 721/630 - 721/630 simplified gives 103/90
- So, 20/45 + 49/70 = 103/90
In mixed form: 113/90
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