Add 40/56 and 4/42
40/56 + 4/42 is 17/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
40/56 = 40 × 3/56 × 3 = 120/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
4/42 = 4 × 4/42 × 4 = 16/168 - Add the two like fractions:
120/168 + 16/168 = 120 + 16/168 = 136/168 - 136/168 simplified gives 17/21
- So, 40/56 + 4/42 = 17/21
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