Add 20/45 and 90/70
1st number: 20/45, 2nd number: 1 20/70
20/45 + 90/70 is 109/63.
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,
90/70 = 90 × 9/70 × 9 = 810/630 - Add the two like fractions:
280/630 + 810/630 = 280 + 810/630 = 1090/630 - 1090/630 simplified gives 109/63
- So, 20/45 + 90/70 = 109/63
In mixed form: 146/63
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