Add 20/30 and 90/7
1st number: 20/30, 2nd number: 12 6/7
20/30 + 90/7 is 284/21.
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,
20/30 = 20 × 7/30 × 7 = 140/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
90/7 = 90 × 30/7 × 30 = 2700/210 - Add the two like fractions:
140/210 + 2700/210 = 140 + 2700/210 = 2840/210 - 2840/210 simplified gives 284/21
- So, 20/30 + 90/7 = 284/21
In mixed form: 1311/21
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