Add 25/42 and 40/90
25/42 + 40/90 is 131/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
25/42 = 25 × 15/42 × 15 = 375/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
40/90 = 40 × 7/90 × 7 = 280/630 - Add the two like fractions:
375/630 + 280/630 = 375 + 280/630 = 655/630 - 655/630 simplified gives 131/126
- So, 25/42 + 40/90 = 131/126
In mixed form: 15/126
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