Add 81/45 and 20/70
1st number: 1 36/45, 2nd number: 20/70
81/45 + 20/70 is 73/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
81/45 = 81 × 14/45 × 14 = 1134/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
20/70 = 20 × 9/70 × 9 = 180/630 - Add the two like fractions:
1134/630 + 180/630 = 1134 + 180/630 = 1314/630 - 1314/630 simplified gives 73/35
- So, 81/45 + 20/70 = 73/35
In mixed form: 23/35
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