Add 12/15 and 42/70
12/15 + 42/70 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
12/15 = 12 × 14/15 × 14 = 168/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
42/70 = 42 × 3/70 × 3 = 126/210 - Add the two like fractions:
168/210 + 126/210 = 168 + 126/210 = 294/210 - 294/210 simplified gives 7/5
- So, 12/15 + 42/70 = 7/5
In mixed form: 12/5
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