Add 42/30 and 21/56
1st number: 1 12/30, 2nd number: 21/56
42/30 + 21/56 is 71/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 30 × 28 = 840,
42/30 = 42 × 28/30 × 28 = 1176/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
21/56 = 21 × 15/56 × 15 = 315/840 - Add the two like fractions:
1176/840 + 315/840 = 1176 + 315/840 = 1491/840 - 1491/840 simplified gives 71/40
- So, 42/30 + 21/56 = 71/40
In mixed form: 131/40
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