Add 42/4 and 81/90
1st number: 10 2/4, 2nd number: 81/90
42/4 + 81/90 is 57/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
42/4 = 42 × 45/4 × 45 = 1890/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
81/90 = 81 × 2/90 × 2 = 162/180 - Add the two like fractions:
1890/180 + 162/180 = 1890 + 162/180 = 2052/180 - 2052/180 simplified gives 57/5
- So, 42/4 + 81/90 = 57/5
In mixed form: 112/5
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