Add 90/70 and 12/15
1st number: 1 20/70, 2nd number: 12/15
90/70 + 12/15 is 73/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
12/15 = 12 × 14/15 × 14 = 168/210 - Add the two like fractions:
270/210 + 168/210 = 270 + 168/210 = 438/210 - 438/210 simplified gives 73/35
- So, 90/70 + 12/15 = 73/35
In mixed form: 23/35
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