Add 54/21 and 40/30
1st number: 2 12/21, 2nd number: 1 10/30
54/21 + 40/30 is 82/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
54/21 = 54 × 10/21 × 10 = 540/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
40/30 = 40 × 7/30 × 7 = 280/210 - Add the two like fractions:
540/210 + 280/210 = 540 + 280/210 = 820/210 - 820/210 simplified gives 82/21
- So, 54/21 + 40/30 = 82/21
In mixed form: 319/21
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