Add 28/90 and 30/84
28/90 + 30/84 is 421/630.
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,
28/90 = 28 × 14/90 × 14 = 392/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
30/84 = 30 × 15/84 × 15 = 450/1260 - Add the two like fractions:
392/1260 + 450/1260 = 392 + 450/1260 = 842/1260 - 842/1260 simplified gives 421/630
- So, 28/90 + 30/84 = 421/630
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