Add 81/90 and 4/7
81/90 + 4/7 is 103/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
81/90 = 81 × 7/90 × 7 = 567/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
4/7 = 4 × 90/7 × 90 = 360/630 - Add the two like fractions:
567/630 + 360/630 = 567 + 360/630 = 927/630 - 927/630 simplified gives 103/70
- So, 81/90 + 4/7 = 103/70
In mixed form: 133/70
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