Add 90/54 and 12/42
1st number: 1 36/54, 2nd number: 12/42
90/54 + 12/42 is 41/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
90/54 = 90 × 7/54 × 7 = 630/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
12/42 = 12 × 9/42 × 9 = 108/378 - Add the two like fractions:
630/378 + 108/378 = 630 + 108/378 = 738/378 - 738/378 simplified gives 41/21
- So, 90/54 + 12/42 = 41/21
In mixed form: 120/21
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