Add 72/98 and 42/80
72/98 + 42/80 is 2469/1960.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 98 × 40 = 3920,
72/98 = 72 × 40/98 × 40 = 2880/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
42/80 = 42 × 49/80 × 49 = 2058/3920 - Add the two like fractions:
2880/3920 + 2058/3920 = 2880 + 2058/3920 = 4938/3920 - 4938/3920 simplified gives 2469/1960
- So, 72/98 + 42/80 = 2469/1960
In mixed form: 1509/1960
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