Add 21/14 and 70/45
1st number: 1 7/14, 2nd number: 1 25/45
21/14 + 70/45 is 55/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 14 × 45 = 630,
21/14 = 21 × 45/14 × 45 = 945/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
70/45 = 70 × 14/45 × 14 = 980/630 - Add the two like fractions:
945/630 + 980/630 = 945 + 980/630 = 1925/630 - 1925/630 simplified gives 55/18
- So, 21/14 + 70/45 = 55/18
In mixed form: 31/18
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