Add 15/90 and 72/80
15/90 + 72/80 is 16/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
15/90 = 15 × 8/90 × 8 = 120/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
72/80 = 72 × 9/80 × 9 = 648/720 - Add the two like fractions:
120/720 + 648/720 = 120 + 648/720 = 768/720 - 768/720 simplified gives 16/15
- So, 15/90 + 72/80 = 16/15
In mixed form: 11/15
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