Add 54/40 and 70/21
1st number: 1 14/40, 2nd number: 3 7/21
54/40 + 70/21 is 281/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
54/40 = 54 × 21/40 × 21 = 1134/840 - Likewise, for the 2nd fraction, since 21 × 40 = 840,
70/21 = 70 × 40/21 × 40 = 2800/840 - Add the two like fractions:
1134/840 + 2800/840 = 1134 + 2800/840 = 3934/840 - 3934/840 simplified gives 281/60
- So, 54/40 + 70/21 = 281/60
In mixed form: 441/60
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