Add 70/20 and 42/24
1st number: 3 10/20, 2nd number: 1 18/24
70/20 + 42/24 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 20 × 6 = 120,
70/20 = 70 × 6/20 × 6 = 420/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
42/24 = 42 × 5/24 × 5 = 210/120 - Add the two like fractions:
420/120 + 210/120 = 420 + 210/120 = 630/120 - 630/120 simplified gives 21/4
- So, 70/20 + 42/24 = 21/4
In mixed form: 51/4
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