Add 18/42 and 25/40
18/42 + 25/40 is 59/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
18/42 = 18 × 20/42 × 20 = 360/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
25/40 = 25 × 21/40 × 21 = 525/840 - Add the two like fractions:
360/840 + 525/840 = 360 + 525/840 = 885/840 - 885/840 simplified gives 59/56
- So, 18/42 + 25/40 = 59/56
In mixed form: 13/56
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