Add 72/63 and 80/90
1st number: 1 9/63, 2nd number: 80/90
72/63 + 80/90 is 128/63.
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,
72/63 = 72 × 10/63 × 10 = 720/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
80/90 = 80 × 7/90 × 7 = 560/630 - Add the two like fractions:
720/630 + 560/630 = 720 + 560/630 = 1280/630 - 1280/630 simplified gives 128/63
- So, 72/63 + 80/90 = 128/63
In mixed form: 22/63
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