Add 21/16 and 70/45
1st number: 1 5/16, 2nd number: 1 25/45
21/16 + 70/45 is 413/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
21/16 = 21 × 45/16 × 45 = 945/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
70/45 = 70 × 16/45 × 16 = 1120/720 - Add the two like fractions:
945/720 + 1120/720 = 945 + 1120/720 = 2065/720 - 2065/720 simplified gives 413/144
- So, 21/16 + 70/45 = 413/144
In mixed form: 2125/144
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