Add 40/90 and 8/21
40/90 + 8/21 is 52/63.
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,
40/90 = 40 × 7/90 × 7 = 280/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
8/21 = 8 × 30/21 × 30 = 240/630 - Add the two like fractions:
280/630 + 240/630 = 280 + 240/630 = 520/630 - 520/630 simplified gives 52/63
- So, 40/90 + 8/21 = 52/63
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