Add 72/80 and 45/56
72/80 + 45/56 is 477/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 56 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
72/80 = 72 × 7/80 × 7 = 504/560 - Likewise, for the 2nd fraction, since 56 × 10 = 560,
45/56 = 45 × 10/56 × 10 = 450/560 - Add the two like fractions:
504/560 + 450/560 = 504 + 450/560 = 954/560 - 954/560 simplified gives 477/280
- So, 72/80 + 45/56 = 477/280
In mixed form: 1197/280
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