Add 28/35 and 21/72
28/35 + 21/72 is 131/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 35 × 72 = 2520,
28/35 = 28 × 72/35 × 72 = 2016/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
21/72 = 21 × 35/72 × 35 = 735/2520 - Add the two like fractions:
2016/2520 + 735/2520 = 2016 + 735/2520 = 2751/2520 - 2751/2520 simplified gives 131/120
- So, 28/35 + 21/72 = 131/120
In mixed form: 111/120
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