Add 12/15 and 42/56
12/15 + 42/56 is 31/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
12/15 = 12 × 56/15 × 56 = 672/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
42/56 = 42 × 15/56 × 15 = 630/840 - Add the two like fractions:
672/840 + 630/840 = 672 + 630/840 = 1302/840 - 1302/840 simplified gives 31/20
- So, 12/15 + 42/56 = 31/20
In mixed form: 111/20
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