Add 15/42 and 40/50
15/42 + 40/50 is 81/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
15/42 = 15 × 25/42 × 25 = 375/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
40/50 = 40 × 21/50 × 21 = 840/1050 - Add the two like fractions:
375/1050 + 840/1050 = 375 + 840/1050 = 1215/1050 - 1215/1050 simplified gives 81/70
- So, 15/42 + 40/50 = 81/70
In mixed form: 111/70
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