Add 14/90 and 40/21
1st number: 14/90, 2nd number: 1 19/21
14/90 + 40/21 is 649/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
14/90 = 14 × 7/90 × 7 = 98/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
40/21 = 40 × 30/21 × 30 = 1200/630 - Add the two like fractions:
98/630 + 1200/630 = 98 + 1200/630 = 1298/630 - 1298/630 simplified gives 649/315
- So, 14/90 + 40/21 = 649/315
In mixed form: 219/315
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