Add 90/14 and 63/21
1st number: 6 6/14, 2nd number: 3 0/21
90/14 + 63/21 is 66/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
90/14 = 90 × 3/14 × 3 = 270/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
63/21 = 63 × 2/21 × 2 = 126/42 - Add the two like fractions:
270/42 + 126/42 = 270 + 126/42 = 396/42 - 396/42 simplified gives 66/7
- So, 90/14 + 63/21 = 66/7
In mixed form: 93/7
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