Add 6/60 and 21/70
6/60 + 21/70 is 2/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
6/60 = 6 × 7/60 × 7 = 42/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
21/70 = 21 × 6/70 × 6 = 126/420 - Add the two like fractions:
42/420 + 126/420 = 42 + 126/420 = 168/420 - 168/420 simplified gives 2/5
- So, 6/60 + 21/70 = 2/5
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