Add 42/81 and 60/70
42/81 + 60/70 is 260/189.
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,
42/81 = 42 × 70/81 × 70 = 2940/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
60/70 = 60 × 81/70 × 81 = 4860/5670 - Add the two like fractions:
2940/5670 + 4860/5670 = 2940 + 4860/5670 = 7800/5670 - 7800/5670 simplified gives 260/189
- So, 42/81 + 60/70 = 260/189
In mixed form: 171/189
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