Add 54/84 and 54/90
54/84 + 54/90 is 87/70.
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,
54/84 = 54 × 15/84 × 15 = 810/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
54/90 = 54 × 14/90 × 14 = 756/1260 - Add the two like fractions:
810/1260 + 756/1260 = 810 + 756/1260 = 1566/1260 - 1566/1260 simplified gives 87/70
- So, 54/84 + 54/90 = 87/70
In mixed form: 117/70
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