Add 12/84 and 9/90
12/84 + 9/90 is 17/70.
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,
12/84 = 12 × 15/84 × 15 = 180/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
9/90 = 9 × 14/90 × 14 = 126/1260 - Add the two like fractions:
180/1260 + 126/1260 = 180 + 126/1260 = 306/1260 - 306/1260 simplified gives 17/70
- So, 12/84 + 9/90 = 17/70
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