Add 10/21 and 90/40
1st number: 10/21, 2nd number: 2 10/40
10/21 + 90/40 is 229/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
10/21 = 10 × 40/21 × 40 = 400/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
90/40 = 90 × 21/40 × 21 = 1890/840 - Add the two like fractions:
400/840 + 1890/840 = 400 + 1890/840 = 2290/840 - 2290/840 simplified gives 229/84
- So, 10/21 + 90/40 = 229/84
In mixed form: 261/84
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