Add 7/42 and 8/90
7/42 + 8/90 is 23/90.
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,
7/42 = 7 × 15/42 × 15 = 105/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
8/90 = 8 × 7/90 × 7 = 56/630 - Add the two like fractions:
105/630 + 56/630 = 105 + 56/630 = 161/630 - 161/630 simplified gives 23/90
- So, 7/42 + 8/90 = 23/90
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