Add 28/42 and 10/90
28/42 + 10/90 is 7/9.
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,
28/42 = 28 × 15/42 × 15 = 420/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
10/90 = 10 × 7/90 × 7 = 70/630 - Add the two like fractions:
420/630 + 70/630 = 420 + 70/630 = 490/630 - 490/630 simplified gives 7/9
- So, 28/42 + 10/90 = 7/9
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