Add 50/90 and 72/21
1st number: 50/90, 2nd number: 3 9/21
50/90 + 72/21 is 251/63.
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,
50/90 = 50 × 7/90 × 7 = 350/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
72/21 = 72 × 30/21 × 30 = 2160/630 - Add the two like fractions:
350/630 + 2160/630 = 350 + 2160/630 = 2510/630 - 2510/630 simplified gives 251/63
- So, 50/90 + 72/21 = 251/63
In mixed form: 362/63
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