Add 18/90 and 15/42
18/90 + 15/42 is 39/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
18/90 = 18 × 7/90 × 7 = 126/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
15/42 = 15 × 15/42 × 15 = 225/630 - Add the two like fractions:
126/630 + 225/630 = 126 + 225/630 = 351/630 - 351/630 simplified gives 39/70
- So, 18/90 + 15/42 = 39/70
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