Add 90/3 and 81/70
1st number: 30 0/3, 2nd number: 1 11/70
90/3 + 81/70 is 2181/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 3 × 70 = 210,
90/3 = 90 × 70/3 × 70 = 6300/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
81/70 = 81 × 3/70 × 3 = 243/210 - Add the two like fractions:
6300/210 + 243/210 = 6300 + 243/210 = 6543/210 - 6543/210 simplified gives 2181/70
- So, 90/3 + 81/70 = 2181/70
In mixed form: 3111/70
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