Add 30/81 and 45/70
30/81 + 45/70 is 383/378.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 70 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 81 × 70 = 5670,
30/81 = 30 × 70/81 × 70 = 2100/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
45/70 = 45 × 81/70 × 81 = 3645/5670 - Add the two like fractions:
2100/5670 + 3645/5670 = 2100 + 3645/5670 = 5745/5670 - 5745/5670 simplified gives 383/378
- So, 30/81 + 45/70 = 383/378
In mixed form: 15/378
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