Add 54/42 and 70/15
1st number: 1 12/42, 2nd number: 4 10/15
54/42 + 70/15 is 125/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
54/42 = 54 × 5/42 × 5 = 270/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
70/15 = 70 × 14/15 × 14 = 980/210 - Add the two like fractions:
270/210 + 980/210 = 270 + 980/210 = 1250/210 - 1250/210 simplified gives 125/21
- So, 54/42 + 70/15 = 125/21
In mixed form: 520/21
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