Add 81/90 and 70/35
1st number: 81/90, 2nd number: 2 0/35
81/90 + 70/35 is 29/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 35 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
81/90 = 81 × 7/90 × 7 = 567/630 - Likewise, for the 2nd fraction, since 35 × 18 = 630,
70/35 = 70 × 18/35 × 18 = 1260/630 - Add the two like fractions:
567/630 + 1260/630 = 567 + 1260/630 = 1827/630 - 1827/630 simplified gives 29/10
- So, 81/90 + 70/35 = 29/10
In mixed form: 29/10
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