Add 21/63 and 75/90
21/63 + 75/90 is 7/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
21/63 = 21 × 10/63 × 10 = 210/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
75/90 = 75 × 7/90 × 7 = 525/630 - Add the two like fractions:
210/630 + 525/630 = 210 + 525/630 = 735/630 - 735/630 simplified gives 7/6
- So, 21/63 + 75/90 = 7/6
In mixed form: 11/6
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