Add 7/80 and 90/84
1st number: 7/80, 2nd number: 1 6/84
7/80 + 90/84 is 649/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 84 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
7/80 = 7 × 21/80 × 21 = 147/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
90/84 = 90 × 20/84 × 20 = 1800/1680 - Add the two like fractions:
147/1680 + 1800/1680 = 147 + 1800/1680 = 1947/1680 - 1947/1680 simplified gives 649/560
- So, 7/80 + 90/84 = 649/560
In mixed form: 189/560
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