Add 20/90 and 81/56
1st number: 20/90, 2nd number: 1 25/56
20/90 + 81/56 is 841/504.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 90 × 28 = 2520,
20/90 = 20 × 28/90 × 28 = 560/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
81/56 = 81 × 45/56 × 45 = 3645/2520 - Add the two like fractions:
560/2520 + 3645/2520 = 560 + 3645/2520 = 4205/2520 - 4205/2520 simplified gives 841/504
- So, 20/90 + 81/56 = 841/504
In mixed form: 1337/504
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