Add 84/63 and 40/90
1st number: 1 21/63, 2nd number: 40/90
84/63 + 40/90 is 16/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
84/63 = 84 × 10/63 × 10 = 840/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
40/90 = 40 × 7/90 × 7 = 280/630 - Add the two like fractions:
840/630 + 280/630 = 840 + 280/630 = 1120/630 - 1120/630 simplified gives 16/9
- So, 84/63 + 40/90 = 16/9
In mixed form: 17/9
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