Add 90/12 and 42/7
1st number: 7 6/12, 2nd number: 6 0/7
90/12 + 42/7 is 27/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 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 7 × 12 = 84,
42/7 = 42 × 12/7 × 12 = 504/84 - Add the two like fractions:
630/84 + 504/84 = 630 + 504/84 = 1134/84 - 1134/84 simplified gives 27/2
- So, 90/12 + 42/7 = 27/2
In mixed form: 131/2
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