Add 90/12 and 50/21
1st number: 7 6/12, 2nd number: 2 8/21
90/12 + 50/21 is 415/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
90/12 = 90 × 7/12 × 7 = 630/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
50/21 = 50 × 4/21 × 4 = 200/84 - Add the two like fractions:
630/84 + 200/84 = 630 + 200/84 = 830/84 - 830/84 simplified gives 415/42
- So, 90/12 + 50/21 = 415/42
In mixed form: 937/42
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