Add 20/90 and 40/63
20/90 + 40/63 is 6/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
20/90 = 20 × 7/90 × 7 = 140/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
40/63 = 40 × 10/63 × 10 = 400/630 - Add the two like fractions:
140/630 + 400/630 = 140 + 400/630 = 540/630 - 540/630 simplified gives 6/7
- So, 20/90 + 40/63 = 6/7
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