Add 20/90 and 80/84
20/90 + 80/84 is 74/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
20/90 = 20 × 14/90 × 14 = 280/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
80/84 = 80 × 15/84 × 15 = 1200/1260 - Add the two like fractions:
280/1260 + 1200/1260 = 280 + 1200/1260 = 1480/1260 - 1480/1260 simplified gives 74/63
- So, 20/90 + 80/84 = 74/63
In mixed form: 111/63
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