Add 90/21 and 20/7
1st number: 4 6/21, 2nd number: 2 6/7
90/21 + 20/7 is 50/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 21 × 1 = 21,
90/21 = 90 × 1/21 × 1 = 90/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
20/7 = 20 × 3/7 × 3 = 60/21 - Add the two like fractions:
90/21 + 60/21 = 90 + 60/21 = 150/21 - 150/21 simplified gives 50/7
- So, 90/21 + 20/7 = 50/7
In mixed form: 71/7
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