Add 30/84 and 80/90
30/84 + 80/90 is 157/126.
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,
30/84 = 30 × 15/84 × 15 = 450/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
80/90 = 80 × 14/90 × 14 = 1120/1260 - Add the two like fractions:
450/1260 + 1120/1260 = 450 + 1120/1260 = 1570/1260 - 1570/1260 simplified gives 157/126
- So, 30/84 + 80/90 = 157/126
In mixed form: 131/126
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