Add 20/21 and 90/6
1st number: 20/21, 2nd number: 15 0/6
20/21 + 90/6 is 335/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
20/21 = 20 × 2/21 × 2 = 40/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
90/6 = 90 × 7/6 × 7 = 630/42 - Add the two like fractions:
40/42 + 630/42 = 40 + 630/42 = 670/42 - 670/42 simplified gives 335/21
- So, 20/21 + 90/6 = 335/21
In mixed form: 1520/21
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