Add 60/21 and 9/40
1st number: 2 18/21, 2nd number: 9/40
60/21 + 9/40 is 863/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
60/21 = 60 × 40/21 × 40 = 2400/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
9/40 = 9 × 21/40 × 21 = 189/840 - Add the two like fractions:
2400/840 + 189/840 = 2400 + 189/840 = 2589/840 - 2589/840 simplified gives 863/280
- So, 60/21 + 9/40 = 863/280
In mixed form: 323/280
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