Add 70/21 and 18/60
1st number: 3 7/21, 2nd number: 18/60
70/21 + 18/60 is 109/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
70/21 = 70 × 20/21 × 20 = 1400/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
18/60 = 18 × 7/60 × 7 = 126/420 - Add the two like fractions:
1400/420 + 126/420 = 1400 + 126/420 = 1526/420 - 1526/420 simplified gives 109/30
- So, 70/21 + 18/60 = 109/30
In mixed form: 319/30
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