Add 90/30 and 81/7
1st number: 3 0/30, 2nd number: 11 4/7
90/30 + 81/7 is 102/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
90/30 = 90 × 7/30 × 7 = 630/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
81/7 = 81 × 30/7 × 30 = 2430/210 - Add the two like fractions:
630/210 + 2430/210 = 630 + 2430/210 = 3060/210 - 3060/210 simplified gives 102/7
- So, 90/30 + 81/7 = 102/7
In mixed form: 144/7
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