Add 54/56 and 42/90
54/56 + 42/90 is 601/420.
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,
42/90 = 42 × 28/90 × 28 = 1176/2520 - Add the two like fractions:
2430/2520 + 1176/2520 = 2430 + 1176/2520 = 3606/2520 - 3606/2520 simplified gives 601/420
- So, 54/56 + 42/90 = 601/420
In mixed form: 1181/420
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