Add 80/42 and 28/80
1st number: 1 38/42, 2nd number: 28/80
80/42 + 28/80 is 947/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
80/42 = 80 × 40/42 × 40 = 3200/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
28/80 = 28 × 21/80 × 21 = 588/1680 - Add the two like fractions:
3200/1680 + 588/1680 = 3200 + 588/1680 = 3788/1680 - 3788/1680 simplified gives 947/420
- So, 80/42 + 28/80 = 947/420
In mixed form: 2107/420
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