Add 20/84 and 7/54
20/84 + 7/54 is 139/378.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
20/84 = 20 × 9/84 × 9 = 180/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
7/54 = 7 × 14/54 × 14 = 98/756 - Add the two like fractions:
180/756 + 98/756 = 180 + 98/756 = 278/756 - 278/756 simplified gives 139/378
- So, 20/84 + 7/54 = 139/378
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