Add 90/84 and 15/80
1st number: 1 6/84, 2nd number: 15/80
90/84 + 15/80 is 141/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 84 × 20 = 1680,
90/84 = 90 × 20/84 × 20 = 1800/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
15/80 = 15 × 21/80 × 21 = 315/1680 - Add the two like fractions:
1800/1680 + 315/1680 = 1800 + 315/1680 = 2115/1680 - 2115/1680 simplified gives 141/112
- So, 90/84 + 15/80 = 141/112
In mixed form: 129/112
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