Add 81/8 and 70/90
1st number: 10 1/8, 2nd number: 70/90
81/8 + 70/90 is 785/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
81/8 = 81 × 45/8 × 45 = 3645/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
70/90 = 70 × 4/90 × 4 = 280/360 - Add the two like fractions:
3645/360 + 280/360 = 3645 + 280/360 = 3925/360 - 3925/360 simplified gives 785/72
- So, 81/8 + 70/90 = 785/72
In mixed form: 1065/72
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