Add 25/42 and 28/40
25/42 + 28/40 is 136/105.
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,
25/42 = 25 × 20/42 × 20 = 500/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
28/40 = 28 × 21/40 × 21 = 588/840 - Add the two like fractions:
500/840 + 588/840 = 500 + 588/840 = 1088/840 - 1088/840 simplified gives 136/105
- So, 25/42 + 28/40 = 136/105
In mixed form: 131/105
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