Add 90/72 and 40/80
1st number: 1 18/72, 2nd number: 40/80
90/72 + 40/80 is 7/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 72 × 10 = 720,
90/72 = 90 × 10/72 × 10 = 900/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
40/80 = 40 × 9/80 × 9 = 360/720 - Add the two like fractions:
900/720 + 360/720 = 900 + 360/720 = 1260/720 - 1260/720 simplified gives 7/4
- So, 90/72 + 40/80 = 7/4
In mixed form: 13/4
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