Add 30/81 and 42/70
30/81 + 42/70 is 131/135.
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,
42/70 = 42 × 81/70 × 81 = 3402/5670 - Add the two like fractions:
2100/5670 + 3402/5670 = 2100 + 3402/5670 = 5502/5670 - 5502/5670 simplified gives 131/135
- So, 30/81 + 42/70 = 131/135
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