Add 84/90 and 20/63
84/90 + 20/63 is 394/315.
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,
84/90 = 84 × 7/90 × 7 = 588/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
20/63 = 20 × 10/63 × 10 = 200/630 - Add the two like fractions:
588/630 + 200/630 = 588 + 200/630 = 788/630 - 788/630 simplified gives 394/315
- So, 84/90 + 20/63 = 394/315
In mixed form: 179/315
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