Add 54/21 and 15/70
1st number: 2 12/21, 2nd number: 15/70
54/21 + 15/70 is 39/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 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 70 × 3 = 210,
15/70 = 15 × 3/70 × 3 = 45/210 - Add the two like fractions:
540/210 + 45/210 = 540 + 45/210 = 585/210 - 585/210 simplified gives 39/14
- So, 54/21 + 15/70 = 39/14
In mixed form: 211/14
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