Add 42/24 and 81/45
1st number: 1 18/24, 2nd number: 1 36/45
42/24 + 81/45 is 71/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 24 × 15 = 360,
42/24 = 42 × 15/24 × 15 = 630/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
81/45 = 81 × 8/45 × 8 = 648/360 - Add the two like fractions:
630/360 + 648/360 = 630 + 648/360 = 1278/360 - 1278/360 simplified gives 71/20
- So, 42/24 + 81/45 = 71/20
In mixed form: 311/20
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