Add 42/80 and 90/98
42/80 + 90/98 is 2829/1960.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 98 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 80 × 49 = 3920,
42/80 = 42 × 49/80 × 49 = 2058/3920 - Likewise, for the 2nd fraction, since 98 × 40 = 3920,
90/98 = 90 × 40/98 × 40 = 3600/3920 - Add the two like fractions:
2058/3920 + 3600/3920 = 2058 + 3600/3920 = 5658/3920 - 5658/3920 simplified gives 2829/1960
- So, 42/80 + 90/98 = 2829/1960
In mixed form: 1869/1960
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