Add 28/40 and 70/63
1st number: 28/40, 2nd number: 1 7/63
28/40 + 70/63 is 163/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
28/40 = 28 × 63/40 × 63 = 1764/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
70/63 = 70 × 40/63 × 40 = 2800/2520 - Add the two like fractions:
1764/2520 + 2800/2520 = 1764 + 2800/2520 = 4564/2520 - 4564/2520 simplified gives 163/90
- So, 28/40 + 70/63 = 163/90
In mixed form: 173/90
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