Add 21/90 and 40/14
1st number: 21/90, 2nd number: 2 12/14
21/90 + 40/14 is 649/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 14 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
21/90 = 21 × 7/90 × 7 = 147/630 - Likewise, for the 2nd fraction, since 14 × 45 = 630,
40/14 = 40 × 45/14 × 45 = 1800/630 - Add the two like fractions:
147/630 + 1800/630 = 147 + 1800/630 = 1947/630 - 1947/630 simplified gives 649/210
- So, 21/90 + 40/14 = 649/210
In mixed form: 319/210
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