Add 15/2 and 21/42
1st number: 7 1/2, 2nd number: 21/42
152 + 2142 is 81.
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,
152 = 15 × 212 × 21 = 31542 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
2142 = 21 × 142 × 1 = 2142 - Add the two like fractions:
31542 + 2142 = 315 + 2142 = 33642 - 336/42 simplified gives 81
- So, 15/2 + 21/42 = 8/1
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