Add 80/84 and 3/90
80/84 + 3/90 is 69/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
80/84 = 80 × 15/84 × 15 = 1200/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
3/90 = 3 × 14/90 × 14 = 42/1260 - Add the two like fractions:
1200/1260 + 42/1260 = 1200 + 42/1260 = 1242/1260 - 1242/1260 simplified gives 69/70
- So, 80/84 + 3/90 = 69/70
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