Add 10/90 and 45/21
1st number: 10/90, 2nd number: 2 3/21
10/90 + 45/21 is 142/63.
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,
10/90 = 10 × 7/90 × 7 = 70/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
45/21 = 45 × 30/21 × 30 = 1350/630 - Add the two like fractions:
70/630 + 1350/630 = 70 + 1350/630 = 1420/630 - 1420/630 simplified gives 142/63
- So, 10/90 + 45/21 = 142/63
In mixed form: 216/63
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