Add 9/63 and 81/90
9/63 + 81/90 is 73/70.
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,
9/63 = 9 × 10/63 × 10 = 90/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
81/90 = 81 × 7/90 × 7 = 567/630 - Add the two like fractions:
90/630 + 567/630 = 90 + 567/630 = 657/630 - 657/630 simplified gives 73/70
- So, 9/63 + 81/90 = 73/70
In mixed form: 13/70
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