Add 90/2 and 21/42
1st number: 45 0/2, 2nd number: 21/42
90/2 + 21/42 is 91/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
90/2 = 90 × 21/2 × 21 = 1890/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
21/42 = 21 × 1/42 × 1 = 21/42 - Add the two like fractions:
1890/42 + 21/42 = 1890 + 21/42 = 1911/42 - 1911/42 simplified gives 91/2
- So, 90/2 + 21/42 = 91/2
In mixed form: 451/2
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