Add 1/42 and 84/80
1st number: 1/42, 2nd number: 1 4/80
1/42 + 84/80 is 451/420.
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,
1/42 = 1 × 40/42 × 40 = 40/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
84/80 = 84 × 21/80 × 21 = 1764/1680 - Add the two like fractions:
40/1680 + 1764/1680 = 40 + 1764/1680 = 1804/1680 - 1804/1680 simplified gives 451/420
- So, 1/42 + 84/80 = 451/420
In mixed form: 131/420
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