Add 72/63 and 28/40
1st number: 1 9/63, 2nd number: 28/40
72/63 + 28/40 is 129/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 40 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 63 × 40 = 2520,
72/63 = 72 × 40/63 × 40 = 2880/2520 - Likewise, for the 2nd fraction, since 40 × 63 = 2520,
28/40 = 28 × 63/40 × 63 = 1764/2520 - Add the two like fractions:
2880/2520 + 1764/2520 = 2880 + 1764/2520 = 4644/2520 - 4644/2520 simplified gives 129/70
- So, 72/63 + 28/40 = 129/70
In mixed form: 159/70
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