Add 12/54 and 21/30
12/54 + 21/30 is 83/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 30 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
12/54 = 12 × 5/54 × 5 = 60/270 - Likewise, for the 2nd fraction, since 30 × 9 = 270,
21/30 = 21 × 9/30 × 9 = 189/270 - Add the two like fractions:
60/270 + 189/270 = 60 + 189/270 = 249/270 - 249/270 simplified gives 83/90
- So, 12/54 + 21/30 = 83/90
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