Add 75/80 and 7/90
75/80 + 7/90 is 731/720.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
75/80 = 75 × 9/80 × 9 = 675/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
7/90 = 7 × 8/90 × 8 = 56/720 - Add the two like fractions:
675/720 + 56/720 = 675 + 56/720 = 731/720 - So, 75/80 + 7/90 = 731/720
In mixed form: 111/720
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