Add 12/20 and 15/70
12/20 + 15/70 is 57/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
12/20 = 12 × 7/20 × 7 = 84/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
15/70 = 15 × 2/70 × 2 = 30/140 - Add the two like fractions:
84/140 + 30/140 = 84 + 30/140 = 114/140 - 114/140 simplified gives 57/70
- So, 12/20 + 15/70 = 57/70
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