Add 45/56 and 21/40
45/56 + 21/40 is 93/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
45/56 = 45 × 5/56 × 5 = 225/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
21/40 = 21 × 7/40 × 7 = 147/280 - Add the two like fractions:
225/280 + 147/280 = 225 + 147/280 = 372/280 - 372/280 simplified gives 93/70
- So, 45/56 + 21/40 = 93/70
In mixed form: 123/70
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