Add 3/60 and 12/70
3/60 + 12/70 is 31/140.
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,
3/60 = 3 × 7/60 × 7 = 21/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
12/70 = 12 × 6/70 × 6 = 72/420 - Add the two like fractions:
21/420 + 72/420 = 21 + 72/420 = 93/420 - 93/420 simplified gives 31/140
- So, 3/60 + 12/70 = 31/140
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