Add 36/90 and 81/42
1st number: 36/90, 2nd number: 1 39/42
36/90 + 81/42 is 163/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
36/90 = 36 × 7/90 × 7 = 252/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
81/42 = 81 × 15/42 × 15 = 1215/630 - Add the two like fractions:
252/630 + 1215/630 = 252 + 1215/630 = 1467/630 - 1467/630 simplified gives 163/70
- So, 36/90 + 81/42 = 163/70
In mixed form: 223/70
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