Add 20/45 and 84/70
1st number: 20/45, 2nd number: 1 14/70
20/45 + 84/70 is 74/45.
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,
84/70 = 84 × 9/70 × 9 = 756/630 - Add the two like fractions:
280/630 + 756/630 = 280 + 756/630 = 1036/630 - 1036/630 simplified gives 74/45
- So, 20/45 + 84/70 = 74/45
In mixed form: 129/45
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