Add 12/70 and 3/42
12/70 + 3/42 is 17/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
12/70 = 12 × 3/70 × 3 = 36/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
3/42 = 3 × 5/42 × 5 = 15/210 - Add the two like fractions:
36/210 + 15/210 = 36 + 15/210 = 51/210 - 51/210 simplified gives 17/70
- So, 12/70 + 3/42 = 17/70
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