Add 9/28 and 72/80
9/28 + 72/80 is 171/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
9/28 = 9 × 20/28 × 20 = 180/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
72/80 = 72 × 7/80 × 7 = 504/560 - Add the two like fractions:
180/560 + 504/560 = 180 + 504/560 = 684/560 - 684/560 simplified gives 171/140
- So, 9/28 + 72/80 = 171/140
In mixed form: 131/140
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