Add 54/56 and 18/90
54/56 + 18/90 is 163/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
54/56 = 54 × 45/56 × 45 = 2430/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
18/90 = 18 × 28/90 × 28 = 504/2520 - Add the two like fractions:
2430/2520 + 504/2520 = 2430 + 504/2520 = 2934/2520 - 2934/2520 simplified gives 163/140
- So, 54/56 + 18/90 = 163/140
In mixed form: 123/140
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