Add 7/2 and 5/21
1st number: 3 1/2, 2nd number: 5/21
72 + 521 is 15742.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
72 = 7 × 212 × 21 = 14742 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
521 = 5 × 221 × 2 = 1042 - Add the two like fractions:
14742 + 1042 = 147 + 1042 = 15742 - So, 7/2 + 5/21 = 157/42
In mixed form: 33142
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