Add 42/90 and 10/21
42/90 + 10/21 is 33/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
42/90 = 42 × 7/90 × 7 = 294/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
10/21 = 10 × 30/21 × 30 = 300/630 - Add the two like fractions:
294/630 + 300/630 = 294 + 300/630 = 594/630 - 594/630 simplified gives 33/35
- So, 42/90 + 10/21 = 33/35
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