Add 10/21 and 64/90
10/21 + 64/90 is 374/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
10/21 = 10 × 30/21 × 30 = 300/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
64/90 = 64 × 7/90 × 7 = 448/630 - Add the two like fractions:
300/630 + 448/630 = 300 + 448/630 = 748/630 - 748/630 simplified gives 374/315
- So, 10/21 + 64/90 = 374/315
In mixed form: 159/315
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