Add 9/80 and 90/84
1st number: 9/80, 2nd number: 1 6/84
9/80 + 90/84 is 663/560.
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,
9/80 = 9 × 21/80 × 21 = 189/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
90/84 = 90 × 20/84 × 20 = 1800/1680 - Add the two like fractions:
189/1680 + 1800/1680 = 189 + 1800/1680 = 1989/1680 - 1989/1680 simplified gives 663/560
- So, 9/80 + 90/84 = 663/560
In mixed form: 1103/560
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